| Brand | Switchgear parts |
| Model NO. | Digital Timer Switch THC 109B-16A Light Dependent Relay ＆accessories |
| Rated voltage | AC220V |
| Rated normal current | 25A |
| Rated frequency | 50/60Hz |
| Series | THC 109B |
Welcome to use light dependent relay! The product can turn on or turn off light automatically according to ambient -light. Ambient temperature and humidity can’t affect it. It is not only convenient but also practical; it can control the load working only at night. It is used for road light, garden light, etc.
Product Features
Can automatically turn the lights on or off based on ambient light
Not affected by ambient temperature and humidity
The controllable load operates only at night.
Suitable for road lights, garden lights, and the like.
Light-sensitive probe, can be directly used with the product
Rail installation is more convenient with an improved mounting method
Item NO |
THC109B |
Voltage range |
AC220V 50/60Hz |
Timing error |
AC 180-250V |
Display |
4VA(max) |
Mechanical life |
10⁵ times (Rated load) |
Control current |
16A,20A,25A |
Mounting |
DIN rail mounting |
Contact Capacity |
THC109B 16A Resistive:16A/250VAC(cosφ=1) |
Ambient Light |
＜5-150LUX(adjustable) |
QTY |
100PCS |
G.W |
15KG |
N.W |
13KG |
MEAS |
515x330x325mm |
Temperature |
-10~40℃ |
Relative humidity |
35~85%RH |
·Host Maintenance: Regularly clean the surface dust, avoid electromagnetic interference sources, and check the terminal tightening status every quarter;
·Sensor Maintenance: Wipe the probe surface monthly to prevent dust from covering and affecting light-sensing accuracy, and avoid collision damage;
·Accessory Maintenance: Check the sealing rubber strip of the outdoor waterproof box every year and replace it in time if it is aging; avoid pulling and bending the extension cable;
·Usage Specification: Avoid overload operation, install surge protectors for inductive loads to reduce contact loss;
·Storage Specification: Spare equipment and accessories should be stored in a dry and ventilated place with a temperature of 0℃~+30℃ and humidity ≤60%.
The THC 109B is a light-sensing control relay with 16A rated current, compatible with AC 220-240V/50-60Hz voltage. Its core function is to automatically control load on/off (turn on at dusk, turn off at dawn) by sensing ambient light intensity through a photosensitive element. It supports manual adjustment of light-sensing threshold, day-night mode switching, and has a built-in anti-interference circuit. With special accessories, it can realize outdoor waterproof installation, widely used in street lights, landscape lights, advertising light boxes and other scenarios.
