Model :

STM 101

Model : STD 105 TS : Twilight Switch with output max up to 05 Amps

Model : STM 105 TS : Twilight Switch with output max up to 05 Amps

Model : STM 115 TS : Twilight Switch with output max up to 15 Amps

Twilight Switch works on Twilight principle which automatically switches the lights ON in the evening upon sensing darkness and switches the lights OFF in the morning after sensing daylight. Hence Lamp is ON only when it is required resulting in considerable saving in electricity cost and optimal electricity consumption. It has a by-pass switch with which lights can be switched ON and OFF manually as may be required. Sensor can be removed from the enclosure and can be placed any suitable place outside enclosure (cable length of sensor can be extended to required length). Sensitivity adjustment is provided inside the unit. Unit works on 220 volts AC and offers potential free relay contacts.

1       Product uses latest Ambient Light Sensing and Solid State Technique.

2       Unit works on 220 Volts AC supply with 600 watts output capacity.

3       LED indications for Power and output help user while using the product.

4       Any type of lamp such as tube light or bulb or CFL can be used with this unit.

5       User can connect more number of lamps in parallel totaling up to 600 watts.

6       Sensor can be placed anywhere even outside enclosure box as connected by terminal strip.

7       Length of sensor cable can be extended to any required length

8       Unit has Auto - Manual switch using which unit can be bypassed any time when required.

9       These are very suitable for remote locations for automatic lighting of area.

10     They offer safety & security to premises as area is lighted automatically during night.


Power Supply



Volts AC thru terminal strip




Volts AC thru terminal strip

Output Capacity



Watts Maximum

Sensitivity Adj.


Provided inside the unit



Sensor in separate housing

Bypass Switch


Provided for Manual over-ride

Working on


Ambient Light Sensing

zLED Indications


Provided for Power and Output

Suitable for


Tube Light / Bulb / CFL



155 x 125 x 55 mm



Powder coated metal box



Light ON in the evening and OFF in the morning