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ST210 Automatic Light Switch with Photocell - 2 Wire

Add more depth to your lighting circuit with the addtion of Suretime’s ST210 light switch, this enables an automatic dusk light on time of 2,4,6 or 8 hours as well as a full dusk to dawn function. No neutral is required making it an easy like for like replacement of your typical exisiting light switch.

  • Supports single or two-way switching.
  • Adjustable lux level to suit installation area.
  • Adjustable on-time adjustment.
  • Manual ON/OFF switch.
  • LED compatible (with use of the ZV900 load controller).
  • Concealed controls for lux and light on time after dusk.
St210 web
  • Suretime logo
  • ST LEDs up to 300W
  • ST 2 Year Guarantee


Operating Voltage 230V AC 50Hz
Operating Temperature -20°C to +40°C
Earth Class Class II
Switch Rating 300W Halogen, 18W to 150W Fluorescent (Low-loss or electronic ballast), 15W to 100W CFL (electronic ballast), 5W to 300W LED (with use of the ZV900 adaptor)
Wall Box Depth 25mm
Mounting Height 1.1m for optimum detection range (clear open area with a window preferred for accurate day light reading)
Lux Level Adjustment 1-10 lux (Moon Symbol) - 300 lux (Sun Symbol)
Dimensions Height 86mm x Width 86mm x Depth 27mm

This product requires to be permanently powered which is achieved through the switched live. As such, some LED and CFL lamps may glow or flash whilst this product is in the “OFF” status. This glow/flash can be eliminated by adding the Timeguard ZV900 Automatic switch load controller to the circuit. The Model ZV900 is sold separately.

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