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12 / 24 Volt AC or DC photo eye |
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12
Volt AC/DC photocell/ coil rated for 12 volt DC 10 amp Buy:: 12 V DC-AC photocell at Amazon 12 V DC mighty mule photo eye All 12 VDC photocells 12 Volt DC products at Amazon |
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12
Volt DC photocell for 12 VDC car battery Buy:: 12 V DC photocell at Amazon All 12 VDC photocells 12 Volt DC products at Amazon Resource: Reverse photocell so it turns off at night and on at day |
Larger image  ST01 uses CR2 battery |
6-12-24
volt photo eye
ST01/ battery-operated/ dawn-to-dusk or dusk-to-dawn/ astronomic or programmable timer/ works with 12-28 Volt AC or DC/ requires no power to operate timer except internal CR2 battery Use dawn-dusk programming. Connect 12V DC to Black and Blue wires To reverse operation so load is ON during the day... connect blue and red wires together ST01 and Ei600 timers are battery operated These timers do NOT require connection to 120 Volt power Free standing timer, replaceable CR2 battery DC Loads 4A 12V dc, 2A 28V dc Buy: Intermatic ST01c timer at Amazon/ 1 year warranty Intermatic ST01 timer Ei600 5-year warranty timer at Amazon CR2 replacement battery at Amazon Resources: Load ratings for Intermatic timers/ pdf Load rating for ST01 timer: 120V ac, 6A, 208-277V ac; DC Loads 4A 12V dc, 2A 28V dc; Motors 1HP 120VAC, 2HP 240V ac, Ballast 16A 120V ac, 208-277V ac; Resistive 20A 120-277Vac. |
 Red-Blue-Black-green wires LED display is not illuminated |
Why
is this timer a photo eye? Because it can operate dawn-to-dusk or dusk-to-dawn. The timer automatically adjusts for time zone. The dawn dusk setting can be adjusted slightly longer or shorter. The timer can be connected to delay timer to turn off earlier than dusk or dawn Choose dawn-to-dusk by connecting blue and red wire together. Choose dusk-to-dawn by capping red wire Why is this timer 12 Volt DC Because the timer is battery-operated. Battery lasts 2-3 years. Because the timer does not need to be connected to 120 Volt AC or 240 Volt AC power to operate. Just the battery is needed Timer can be located inside electric box, anywhere outdoors-or-indoors. Can be located in shaded or dark location without affecting operation. ST01 timer is rated DC Loads 4A 12V dc, 2A 28V dc Resources: How to program and wire ST01 timer |
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ST01
timer controls PV solar panels Concept illustration. Not tested as drawn with solar panels. Following information about ST01 timer is tested: ST01 timer is rated 4A 12V dc, 2A 28V dc Install 2 amp fuse as shown When ST01 timer red-and-blue wires are connected, then programming is reversed. Dusk-to-Dawn become Dawn-to-Dusk Buy: DC-DC heavy amp relay with 12-24 Volt DC coil, contacts rated 250 VDC 26 amp DC-DC heavy amp relay with 12-24 Volt DC coil, contacts rated 400 VDC 200 amp Intermatic ST01c timer at Amazon |
 Larger image LCD display is not lighted  All Intermatic timers |
ST01C 7-day/
battery operated no
neutral required / single-pole or 3-way
Ei600 / same as ST01 except 5 yr warranty instead of 1 yr warranty /astronomic or programmable/ single-pole 3-way/ 1 yr warranty/ No neutral/ uses CR2 battery Programmable or Astronomic dawn-dusk/ 6 ON and 6 OFF settings per 7-day week Incandescent, CFL, LED, motors, ballast, DC loads/ AC and DC loads 24V up to 277Volt. Permanent override/ No loss of memory in power outage or battery change Buy: Intermatic ST01c timer at Amazon Intermatic ST01 timer Ei600 5-year warranty timer at Amazon CR2 replacement battery at Amazon CFL bulbs at Amazon Manuals/ resources: ST01C manual Sell sheet with model numbers Ei600 manual Sell sheet with model numbers How to program ST01c and Ei600 timers How to wire ST01C and Ei600 timer diagrams Control any 240volt load with ST01c or Ei600 timer How to wire this timer to control water heater or any heavy-amp load |
| Buy: 12 Volt DC products at Amazon |
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12 volt DC power supply 60 watt 120 volt AC to 12 volt DC Buy:: 12 V DC 60 watt power supply 12V DC 10A power supply All 12 volt DC power supplies To wire this as a photoeye, connect ordinary 120 volt AC photoeye to the electric cord going to power supply. Buy:: 120 volt Photo eyes |
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12
volt DC photoeye Buy:: 12 volt DC photoeye |
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Use
DC timer to control solar water heater How it works: When water inside tank is cold, then lower thermostat turns ON 12-24 Volt power supply provides electricity to lower thermostat Thermostat turns ON, then DC relay turns ON, letting solar power flow to lower element. At same time, power is sent to ST01 timer, waiting for timer programs to activate ST01 is battery powered, and keeps time and will operate relays even is 12-24 VDC does not arrive from lower thermostat. With this specific illustration, the lower thermostat must be ON before 12-24 VDC travels to ST01 timer When timer is ON, and lower thermostat is ON, then timer turns ON upper element When solar power is not full strength, then you want to activate lower watt, higher-resistance element to maximize solar output. In this illustration, the lower watt element is the upper element on water heater Set timer so it is ON from 6 AM to 10 AM Set timer so it is OFF from 10 AM to 3 PM Set timer so it is ON from 3 PM to 9 PM Resources: Convert AC water heater to DC water heater |
 Multimeter Test for breaks in wire/ Test for voltage Most appliance require 80% rated voltage to function correctly Buy: Multimeters at Amazon Electric testers at Amazon Resources: How to test and replace element How to test thermocouple Element tests for 120 volts How to test wire |
Safety
when testing wires: Never touch wet or previously flooded appliance. Never stand on wet surface when working on electric. Never stand on bare soil, put down dry boards. Tape tester leads to wood sticks to keep hands away from power. Use non-contact voltage tester before touching wires. Never touch or lean into any made of metal. Remove metal objects from pockets. Do not use oxygen or fuel accelerants in same room as electrcial repairs Resources: Basic house wiring |
 Non-contact voltage tester Test for power without touching connectorss NEVER assume power is OFFBuy: Non-contact voltage tester Amazon Electric testers at Amazon Resources: How to test electric power is off |
Twist-on wire connector assortments Do not reuse old connectors Buy: Connector assortment at Amazon Connector assortment at Amazon Resource How to select and install twist-on wire connectors |
Weatherproof wire connector Connector cavity is full of silicone Built-in cover keeps silicone in place Protect from water, dust etc Buy: from my affiliate links Weatherproof size 14 to 6 Amazon Weatherproof size 22 to 8 Amazon Resource How to select and install twist-on wire connectors |
Wrench to apply wire connectors Tighten connectorBuy: Wire connector blaster Twist connector wrenches at Amazon Resources: How to twist wire How to select and install twist-on wire connectors |
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Buy:
tools: Wire strippers at Amazon Linesman pliers Utility knife at Amazon End cutting nippers at Amazon |
 Fire inside timer caused by stranded wire Keep enclosure door closed at all times |
 Push-on wire connectors in place of twist-on connectors Buy: Push on wire connectors Amazon Red 3P connector for 10-14 gauge wire Lever connectors for stranded wire at Amazon |
 Resources: How to install terminals |
 Terminals Buy: Terminal kit Blue for 16-14 wire Yellow for 12-10 wire Read about terminals |
Orange
10 gauge 30 amp Orange/ #10 gauge for for 30 amp circuits including water heater with ground Buy: 10-2 gauge/ 30 amp 10-3/ 30 amp NMB is house wiring UF is underground |
Yellow
12 gauge 20 amp Yellow/ #12 gauge wire for 20 amp with ground Buy: 12-2 gauge/ 20 amp 12-3/ 20 amp Rolls of stranded wire NMB is house wiring UF is underground |
White
14 gauge 15 amp White/ #14 gauge wire for 15 amp with ground Buy: 14-2 gauge/ 15 amp 14-3/ 15 amp NMB is house wiring UF is underground |
 Copper ground wire Use same size as other wire in circuit Buy: Spools of ground wire Ground rods at Amazon |
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Support
the economy: Buy water heaters from my associate links: 50 gallon Gas water heaters at Amazon 40 gallon gas water heaters at Amazon 50 gallon Electric water heaters at Amazon 40 gallon electric water heaters at Amazon Hybrid / heat pump/ water heaters at Amazon Resources: How to install gas water heater How to install electric water heater Troubleshoot gas water heater Troubleshoot electric water heater Point of use water heaters |
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Resource: Compare box timers DPDT timers Intermatic Control water heater w/ Z-wave |
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Resource: Intermatic control centers: and parts Digital control centers and parts Tork control centers and parts Subpanels All control centers and parts Enclosures |
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Resource: Programmable timers Countdown timers Off delay timers On delay timers Timer modules Din rail Twin & one-shot Woods Intermatic Tork |
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Recirculation systems |
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