A transformer that switches on at dusk and off at dawn without anyone touching a timer is the simplest way to automate a landscape system. The CLS K4221C is an Intermatic swivel mount thermal photocontrol for 120 volt service, with a cadmium sulfide cell and a mechanical bimetal switch.
Why a swivel mount on a transformer photocell?
The swivel lets you point the eye at open sky and away from the landscape lights, a porch fixture or a streetlight. A cell that sees artificial light can cycle on and off, so aiming it well matters as much as mounting it.
What does the switching delay prevent?
A built in delay keeps the control from shutting the lights off when a car headlight or a passing flash hits the cell. The system stays on through brief light changes and only switches when daylight actually returns.
Will it fit my enclosure?
The control mounts on a 1/2 inch 14 NPSM threaded stem and comes with a washer gasket and locking nut. The housing is UV resistant plastic. CLS designs it for professional landscape transformers on 120 volt AC input.
Specifications
| CLS part number | K4221C |
|---|---|
| Type | Thermal photocontrol, stem and swivel mount |
| Voltage | 120V AC |
| Sensor | Cadmium sulfide photocell |
| Switch | Mechanical bimetal |
| Switching delay | Yes |
| Mounting | 1/2″-14 NPSM threaded stem with swivel |
| Housing | UV resistant plastic |
| Included | Washer gasket, locking nut |
Specifications are published by CLS Outdoor Environments and are subject to change without notice. Confirm critical dimensions and ratings with LED Spot before ordering.
See more landscape lighting sensors and photocells, or ask a lighting expert which control pairs best with your transformer.
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