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Controls FAQs

What is the use of astronomical time switch?
An astronomical time switch ensures that the changeover of contacts happens as per accurate sunset and sunrise times of the location where the time switch in installed.
What is a PIR sensor?
A PIR sensor works on Passive Infra Red technology. The PIR sensor senses movement of any human being and triggers an electrical circuit to switch ON.
Are sensors immune to pet movement?
Yes, hager PIR sensors are immune to pet movement.
What if enough natural light is available and PIR sensors need to be bypassed?
All PIR sensors have variable lux settings by which suitable lux settings can be set. Incase of enough natural light being present the sensors will not trigger the circuits to switch ON.
Can one control AC using a sensor?
Hager has dual channel sensors where one can connect one channel to AC. This has to be however we recommend that a contactor is used to switch on the AC to ensure inrush currents do not cause failure of the contacts of the sensor.
What is coverage of the sensor?
Our standard single lens sensors have a coverage of 6m Dia and dual lens of 13m x 7m.
Can sensors be used in corridors?
Yes, hager has specific corridor sensors which have a longer sensing range of upto 20m.
Do analogue and digital time switch have battery reserve?
Yes, they do have battery reserve. The batteries are rechargeable and get charged once power resumes. Please refer to detailed catalogue for more details.
What is the lux level setting for sensors?
The lux level setting is upto 1200 Lux depending on the type of sensor. Please refer to the detailed catalogue.