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How
to wire Intermatic T104 / 208-240-277 volt 40 amp/ 240 volt/ 7680 watts safe maximum for continuously operating/ max 9600 watts/ up to 5 HP Links for wiring 110-125 volt T101 & T171, T103 & T103B, T105 Links for wiring 208-240-277 volt T102 & T172, T106 timers |
 Large image Indoor metal box Buy: T104 series Resource: T104 manual How to operate and set T104 timer Sell sheet with model numbers close photos of WH40 (same as T104) How to maintain T100 series timer Troubleshoot T100 series timer |
 Larger image Indoor metal box/ day skipper Buy: T174 |
 Larger image Mechanism only Buy: T104M |
 Larger image Outdoor metal box Buy: T104R |
 Larger image Outdoor metal box/ day skipper Buy: T174R T174CR with carryover |
 Larger image Outdoor plastic box Buy: T104P Buy: T104PCD82 |
 Large image T104R3 / T104P3 Outdoor metal OR plastic Beige-colored box Buy: T104R3 metal box T104P3 plastic box Resource: Intermatic pool timers and manuals |
 Large image T104R201 / T104P201 Outdoor metal OR plastic Beige-colored box with fireman switch Buy: T104R201 metal box T104P201 plastic boxat Amazon |
 T104M201 mechanism with fireman switch Buy: T104M201 mechanism with fireman |
| Use only 600 volt wire. Lamp cord, extension cords are not rated 600 volt. Use copper wire only. Aluminum wire is fire risk and should be avoided or installed by professional. 30 amp breaker use 10 gauge / 120-240 volt 30 amp outlet can be installed on 30 amp breaker only/ use 10 gauge wire ... cannot be connected to 15-20-40 amp breaker.  Orange/ #10 gauge wire, with ground ... 30 amp capacity. Safe maximum: 30 x 80% = 24 amps. Buy: 10-2 gauge/ 30 amp 10-3/ 30 amp Southwire electric tools |
Yellow
12 gauge 20 amp 120 volt 20 amp outlet can be installed on 20 amp breaker, but not 15 amp breaker/ use 12 ga wire. ... cannot be connected to 30-40 amp breaker. 1  Yellow/ #12 gauge wire, with ground ... 20 amp capacity. Safe maximum 16 amps. Buy: 12-2 gauge/ 20 amp 12-3/ 20 amp NMB is house wiring UF is underground Rolls of stranded wire HOOK UP Wires |
| 50-60
amp breaker use 6 gauge / 240 volt 50 outlet can be installed on 50 amp breaker only  Buy: 6-2 wire Southwire electric tools NMB is house wiring UF is underground |
40-50
amp breaker use 8 gauge / 240 volt 40 amp outlet can be installed on 40 or 50 amp breaker only  Buy: 8-2 wire Southwire electric tools NMB is house wiring UF is underground |
 Multimeters Voltage is tested across two separate wires. Ohms or resistance is tested across both ends of same wire. Amperage is tested along one or two points on same wire. Buy: Analog multimeter Multimeters Klein multimeter Electric testers Clampmeter for testing amp flow on line |
 Electrical tools must be insulated. Always best to disconnect power, but insulation failure, lack of proper grounding, grounded neutral, lack of GFCI, out-of-code wiring, generator operating without transfer switch, and other problems still pose a risk to anyone working on electric power ... even when breaker is off. Buy: 1000 volt Tool kit Electrician tools kits KLEIN TOOLS Tools kits IRWIN tools KNIPEX Telephone cable knife Low Voltage Mounting Bracket for Telephone |
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T104 Wiring begins
here
Applies to T104, T104R/P, T104-50, T104M, WH40, T174, T174R, T17P, T174M, T104R3, T104P201, T104R201, etc Resource: See all models How
do you know if you have T104: Look at door label on inside of timer
door. No label? Then read more
Is power connected to double pole circuit breaker? Are there 5 screw terminals on timer? Are white clock wires on terminals 1 and 3? Is clock motor WG1573? If yes for all, then you have T104 |
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T-104
timer 240Volts or 208 Volts Check label on side of water heater for Volts & Watts T104 has two sets of switch terminals: 1-2 and 3-4 When timer turns ON, then terminal 1 sends power to to terminal 2 ... and terminal 3 sends power to terminal 4. Buy:  T104 uses WG1573 clock motorResources: T104 manual T100 series sell sheet Repair part list Replacement clock motors How to find Hot wire |
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Solid copper wire only Note the insulation is cut back away from screw terminals. Do not score or cut into copper when stripping wire. Use wire stripper and not knife. Do not install with insulation under screw terminal. Tighten screws very tight against solid copper wire. Use screwdriver that fits screw head. Undersized screwdriver will cause loose wire, fire, and melted terminal. Buy tools: Wire strippers Linesman pliers Utility knife |
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T-104
same wiring as shown above Wiring applies to 208-240 volt applications Clock motor is connected to terminals 1 and 3. Wires from breaker are also connected to terminals 1 and 3 so clock motor runs continuously. Clock motor wires can be moved to achieve other wiring objectives. Same wiring applies to T174, WH40 Resource What is 208 volt |
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T-104/
Two 240 Volt loads or Two 208 Volt Loads Move motor leads to terminals A and 1 Turning off 1 Hot wire will turn off 240Volt circuit.  SafetyNote the T100 series timers are rated max 40 amp per pole ... a pole could be interpreted to mean a switching terminal or a screw terminal. If you are trying to control two 40 amp loads, then two timers are required. 40 amp + 40 amp = 80 amp .... 80 amp breaker would need size #2 wire ... see chart The maximum wire size that T100 series terminals will fit is #8 wire supplied from 40 amp breaker. The evidence and rating tell us that maximum for the timer ... no matter how many loads are controlled ... is 40 amps. Yes, the loads can be spit into 10 amp and 30 amp ... but be careful with wiring ... so only two wires are under each screw terminal, and both wires are solid copper and same gauge. If you want both Loads to turn on-off at different times, then you need two timers, or digital timer with two-channel capability such as GM40AVE, GMX2FM2, ET1100, ET1700, P1353 Resources 40 amp GM40 AVE 30 amp ET series timers 20 amp P1353 |
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Add tape to white wire,
when using black-and-white wires for 240Volt, This will notify next electrician that white wire carries power  240Volt wires can be Black-White Black-Red |
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T-104
timer controls 120 Volts Each single phase household circuit takes 2 wires to complete the circuit. 120V takes one 120V hot wire and one neutral wire to complete circuit. 240V takes two 120V hot wires: One 120V hot wire from each busbar to complete circuit. Read difference between 120 volt and 240 volt Change clock from 240V WG1573 to 120V WG1570 Buy: 120Volt clock motor: WG1570 for 60 Hz 120V |
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T-104
controls any voltage/ 120 volt,
480 volt, 12-24 volt, 277 volt using dry
terminals Move motor leads to terminals A and 1 Connect 240 Volt to A and 1 so clock motor runs. Connect any voltage to terminals 3 and 4/ and timer will switch terminals on-off 1-12 times per day depending on how many trippers are installed on the yellow clock face. Dry terminals 1-3 means no voltage is on terminals 1 and 3 unless a wire carrying power is connected. This means you can bring in 120 volt Hot wire and connect it to terminal 3, and it will remain insulated (separate) from the 240 volt on terminals A-1 When the T104 is wired like this,, the switching terminals 3-4 are dry. This means you can use the timer to switch any voltage ... T104 is rated for 24 volt AC or DC, and AC voltages 120-208-240-277-480 volt. Safety
note: Low voltage (12-24 volt etc) wires must be insulated away
from high voltage (120-240) wires. Technically, both sets of wires must
be separated by electrically rated partition so
that insulation failure, loose wire,
short circuit etc cannot
energize the low voltage lines. |
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T-104
controls any voltage/ 2 loads Move motor leads to terminals A and 1 Connect 240 Volt or 277 Volt to A and 1 Resources: Motor wire and amp charts |
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 Larger image  T-102 timer is pre-wired for this installation See more T102 wiring |
T-104
277 Volts Move motor leads to terminals A and 1 Terminals 3 and 4 are dry (have no voltage) in this configuration, and can be wired to control any voltage, or jumper hot wire between terminals 1 and 3 277 Volt timer can be used to control 3-phase 3-pole contactor Commercial
277-480 volt power is extremely dangerous and should only be wired by
professional electrician with experience in commercial voltagesResources How to install 3-phase timer What is 277 volt |
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T-104/
Two 277 Volt loads Move motor leads to terminals A and 1 Add jumper from terminal 1 to terminal 3 Commercial
277-480 volt power is extremely dangerous and should only be wired by
professional electrician with experience in commercial voltagesResources Difference between single-phase and 3-phase What is 277 volt Intermatic timers and manuals |
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T-104/ 480 Volt load Install new clock motor rated for 480 volt Volts x amps = watts (or power output). 480 volt power x 40 amp timer = 19,200 watt capacity 80% safe maximum x 19,200 = 15,360 watt capacity Commercial
277-480 volt power is extremely dangerous and should only be wired by
professional electrician with experience in commercial voltagesBuy: 480 volt clock motor Resource: How to wire 3-phase |
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T-104/ 480 Volt load Install new clock motor rated for 480 volt Move motor leads to terminals A and 1 Use dry switching terminals to control another load. Local electrical codes for commercial wiring will determine which voltages can be used. 480 volts carries twice the power of 240 volt, and can deliver more power per amp than lower voltages. Since volts are the force that push amperage (electrons) through the wire, the added power make 480 volt extremely dangerous, and therefore must be installed correctly to meet safety standards. Commercial
277-480 volt power is extremely dangerous and should only be wired by
professional electrician with experience in commercial voltagesBuy: 480 volt clock motor Resource: How to wire 3-phase |
 277V Larger image T104 controls 277 Volt |
T-104
timer controls 3-phase Control 480-277Volt 3-phase : use 277 Volt wiring shown above and use diagram on left Control 208 Volt 3-phase : Use 240-208 Volt wiring above or diagram on left Control 240Volt 3-phase : use 240 Volt wiring above or diagram on left Fused
disconnect required on 3-phase line for commercial
applicationsBuy: 3-pole contactors Fused disconnect Fusable Safety switch Resources: How to wire 3-phase timer Difference single-phase and 3 phase How to wire fused disconnect / safety switch |
 208-240V Larger image 208-240 volt 3-phase |
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T-104
timer controls 3-phase 480Volt 480Volt timer Control 480 V 3-phase using T104 timer Change 240V WG1573 clock motor to WG1576 clock motor Fused safety switch or disconnect required Timer turns on and completes circuit to contactor. Contactor closes points and completes circuit to 3-phase load. Fused
disconnect required on 3-phase line for commercial
applications Buy: 480
volt clock motor for T100 series:WG1576 480V 3-pole contactors Fused disconnect Fusable Safety switch Resources: 3-phase contactors How to wire 3-phase timers What is 3 phase |
 Larger image RC939 transmitter RC613 receiver WH40 or T104 timer |
Override
timer with remote control Control 240Volt 3500 watt water heater using Intermatic RC 939 remote control and RC615 120Volt receiver 240Volt circuit can be turned off by turning off 1 hot wire Do not exceed amp rating of RC615, otherwise install RC613RC relay or PT1203M Buy: RC939 3-channel radio transmitter RC613 receiver Resources: Up to 100 feet away Full product line RC939 transmitter manual Remote receiver manual RC939 3-channel radio transmitter Fuseholders |
 Connect T104 to 240 volt GFCI
breakerGFCI 2-pole breaker. Only 1 GFCI per circuit. Multiple GFCI will cause tripping. Illustration shows 2-pole 208-240Volt GFCI. Wires leave GFCI and travel to T104 timer, before going to pool pump. National electric code requires 2-pole breaker for 240Volt circuit ... cannot use 2 separate breakers to supply 240 volt. Cannot use 2 separate GFCI breakers to supply 240 volt. Ground wire not shown. Circuit MUST be grounded Buy: 240 volt GFCI breaker GFCI circuit breakers Resource: How to wire GFCI breakers |
Control panel |
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 Ground wire not shown. All ground wires connect to Neutral-ground busbar Larger image |
T-104 timer 240Volt: Pool control
center Control Centers with busbars for installing BR-type push down circuit breakers.  Breakers are installed and wired exactly like main breaker panel Control centers have T104, T101, T106 mechanisms to control multiple pool functions such as pool pump, pool filter, pool light, outlets, and pool cleaner. Install extra circuit breaker for outdoor lights etc. Resources How to wire Intermatic control center breaker busbar Control center is a subpanel: How to install a subpanel See inside main breaker panel Which circuit breaker for Intermatic |
 T104 timer and T106 timer together Problem: The T106 timer is either high or low speed, but never OFF. The pump runs full time. To solve problem, a T104 is added to circuit. This means the T106 will toggle the pump between high and low speed. And the T104 timer turns off the pump. Note the T104 does not turn off the T106 timer ... instead it overrides the T106 and turns off the pump. When T104 timer turns off, the pump resumes high-low operation based on when the T106 timer is in high or low. Normally to accomplish this, the T10604R control center is used ... or you can buy the T106 and T104 separately Buy: T10604R with T106 and T104 together /208-240V for 2-speed pumps T10004R with T104 /208-240V T10404R with two T104 / 208-240V T104 series / buy T104R or T104P with outdoor box T104R metal outdoor box T104P plastic outdoor box T106R outdoor timer Resources: T10604 Door label Intermatic control centers plus manuals and parts |
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T10404R: Two T104
timers for filter and cleaner Filter pump must be ON so cleaner does not burn up Both clock motors connect to terminals 1 and 3 on filter timer. Power only reaches cleaner timer when filter timer is ON Buy: T10004R with T104 /208-240V T10404R with two T104 / 208-240V Resources: Intermatic control centers How to wire T10404 How to wire Intermatic control centers |
 Larger image SPDT Larger image SPST Timer/ freeze control/ and 30 amp switch   |
T-104 timer 240Volts SPDT: Freeze
thermostat Prevent freezing The 15 amp 178T24 Thermostat overrides timer using a 40 amp contactor. Also use illustration above for SPDT, or illustration below for SPST. When temperatures drop toward freezing, the freeze thermostat override timer operation. You can substitute a 15 amp freeze switch (shown in illustration below) in place of the more expensive 178T24. Advantage of 178T24 is temperature range adjustment. Buy: 178T24 thermostat 40 amp contactor with 240Volt coil Separate enclosure Resources: Intermatic freeze controls 178T24 wiring Terminals Contactors |
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Override
T104 using 40 amp contactor and freeze thermostat Move clock motor wires to terminals A and 1 for SPST operation. --A freeze thermostat or freeze switch will turn Load ON when temperature drops below 40°F, and then turn off when temperature rises again. -Low cost way to turn on pool or irrigation pump or heater etc when freezing temperatures are expected. Note the contactor coil should be 240 volt, or same voltage as timer. -When temperature drops, then freeze thermostat completes circuit to the contactor coil. Contactor coil pulls the switching terminals together, and overrides the timer, turning on the Load. -Contactor is approx 2" wide, 2.3" long, and 2.6" tall. -There is generally NOT enough space in the wiring compartment of T104 to add a contactor. The contactor must be installed inside an electrically rated enclosure. -Contactor is approx 2" wide, 2.3" long, and 2.6" tall. -There is generally NOT enough space in the wiring compartment of T101 to add a contactor. The contactor must be installed inside an electrically rated enclosure. Buy: Freeze thermostat 178T24 thermostat Contactor 40 amp 240 Volt coil Packard contactor Mars 2-pole and 3-pole contactors Terminal kit Blue terminals for 16-14 wire Separate enclosure Resources: Enclosures Contactors and contactor wiring |
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PF1100 series: T-104
timer 240Volts with Freeze thermostat Prevent pool pump and pipes from freezing Also use illustrations below for SPDT and SPST Buy control center: PF1112T panel/ no breaker slots, 1 timer PF1222TB1 panel with 4 breaker slots, 2 timers Resources: How to wire PF1100 series timers Intermatic freeze controls PF1112T manual PF1202T manual PF1102M freeze control pdf More control centers and wiring Parts manual |
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120V Larger image |
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| Wiring Tips | |
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Keep wires straight Use solid copper wire If wiring terminal or end of wire are covered with green, use emery board to clean terminal and sandpaper to clean wire. |
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Both wires MUST be same gauge Straighten each wire If wire is corroded or overheated, clean the end with sandpaper and wipe with cloth. If wire has been melted, cut back and reattach, or replace wire. Tighten screw very tight against copper wire |
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 Use wire connector  Use push-on wire connectors |
3 wires/
or different gauge wires Join wires with wire connector or push-on connector Run jumper to screw terminal. Buy: Red 3P connector (shown) for 10-14 gauge wire Lever connectors for stranded wire |
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Fire safety/ Do not put stranded
wire under screw plate Do not install stranded wire under screw. Problem1: picture shows 2 different gauge wires under screw plate Problem2: Stranded wire will expand and contract and come loose under screw plate, even if it is the only wire under the screw plate Attach stranded wire and solid wire with wire connector, and run solid copper jumper wire to screw terminal Take photo of wires before starting.  Resources: Timer caught fire Load ratings for Intermatic timers/ pdf |
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  12 Ga |
10 gauge or 12 gauge? Compare your wire with short pieces of 10 and 12 gauge wire from local box store 10 gauge for 30 amp breaker. 10 gauge wire can have black-white and sometimes black-red 12 gauge for 20 amp breaker 12 gauge will have black and white wires Buy: Southwire romex cable Resources: Match color code and amp rating for wire Basic house wiring |
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Add black tape when White wire
carries voltage (applies to 208 and 240V circuits) With 120 and 277 Volt circuits, White wire is Neutral, and Black is Hot With 208 and 240 circuits, both wires are Hot, and both wires carry voltage Black tape on White wire identifies wire is Hot and not Neutral |
| Parts/ change voltage by changing clock motor | ||
 Repairs etc Resources: Close up photos/ maintenance/ repairs Troubleshoot T100 series timer |
240 volt replacement Clock motors Buy: WG1573 208-277V WG1570 120V WG1576 480V CW190-10 for 24 volt 60 Hz 24V at Intermatic |
 Trippers Up to 12 sets trippers can be put on dial Minimum 1 hour on-off Buy: 156T1978A T100 series trippers |
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Insulators Translucent >124T1948 single pole T101, T102, T105 124T1948 single pole T171, T172, T175 >Buy: 124T1948 at Amazon Black rigid 124T2411A rigid Buy: At Amazon |
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| T-104 timer wired for 480
Volts Buy: WG1576 for 60 Hz 480V |
Change T104 timer by changing clock motor >>>>> Buy WG1573 replacement 240 volt for ordinary T104 240 volt clock motor |
T-104 timer changed into
T104-50 50 Hz timer for use in UK, India etc WG1574-10D motor 50Hz 208-277V Amazon T104-50 |
| T-104 timer for 120 Volts Change T104 timer into 120 volt timer Buy: WG1570 for 60 Hz 120V Move clock motor wires to terminals A and 1 How to wire T103 |
How to replace Intermatic clock motor |
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| T-104 timer for 24 Volts CW190-10 for 24 volt 60 Hz 24V at Intermatic Move clock motor wires to terminals A and 1 |
Buy
T104 240 volt clock motor: WG1573 208-277V Amazon |
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| T101
Wiring: How to wire T101 and T171 series timers Applies to T101, T101R, T101P, T101PCD82, T171, T171R, T171CR, T101R3, T101P3, T101R201, T101P201, T101M, T171M see all models |
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| T101B
Wiring: How to wire T101B timer Applies to T101B with separate wiring terminals |
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| T103
Wiring: How to wire T103 timer Applies to T103, T103R, T103P, T103M, T103PCD82, T173, T173R T173M see all models |
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| How to wire Intermatic T102: How to wire T102 and T172 series timers | ||
| How to
wire Intermatic T105: How to wire T105 timer Nema 1 indoor enclosure/ To convert to 208-277V operation, replace WG1570 clock motor with WG1573 clock motor |
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| How
to wire Intermatic T106 timer: How to wire T106 timer Nema 3R indoor-outdoor enclosure To convert to 120V operation, replace WG1573 clock motor with WG1570 clock motor |
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| How to wire Intermatic pool timer: How to wire pool timers | ||
| More Intermatic timers | |
Control centers: Control centers: + manuals and parts All control centers and parts |
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 Intermatic/ Grasslin enclosures Metal and plastic enclosures |
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Intermatic sprinkler timers and wiring
 How to wire Sprinkler timers + rain sensor + manuals + buying options How to connect rain sensor when timer does not have rain terminals How to Set & Troubleshoot Intermatic sprinkler timer/ pdf |
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  \Multi-function timers and wiring 40 amp Multi function timers and manuals |
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 T1906-5 T1975-6 heavy duty timers 20 amp Multi function timers and manuals |
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 ET series digital timers/ 20-30 amp/ 120-277 volt/ multi-channel (same timer controls two circuits with different programming) ET series timers |
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 Timer modules/ 16 amp/ 12-240 volt Timer modules/ 16 amp/ 12 to 240 volt |
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Buy
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