GRB801/02 Din Rail Twilight Switch Photoelectric Timer Light Sensor Relay AC110V240V Auto ON OFF 1Pcs (Size : GRB801 AC110240V) Overview This DIN rail mounted module combines a twilight switch, photoelectric sensor and timer in a single relay. It automates lighting control in response to ambient light levels and time, helping to reduce energy use and eliminate manual operation. Key benefits Energy saving: automatically switches lights on when ambient light falls below a set level, and off when enough daylight returns or after the timer, reducing wasted electricity. Hands convenience: provides automatic ON/OFF control without manual intervention. Easy retrofits: designed for standard DIN rail mounting in electrical panels, enclosures, or distribution boards. Widevoltage compatibility: operates on AC 110–240V, suitable for many regional mains standards. Compact, integrated solution: combines sensing, timing, and switching in a single compact unit for streamlined installations. Reliable operation: built to perform as a dedicated dusk/dawn and timebased lighting control relay. Key attributes Model: GRB801/02 Din Rail Twilight Switch Photoelectric Timer Light Sensor Relay Functionality: twilight switch with photoelectric sensor and timer, automatic ON/OFF control Voltage range: AC 110–240V Mounting: DIN rail compatible Output: singlepole relay (1Pcs in package) Size reference: GRB801 AC110240V Material: enclosure material not specified Performance: designed for automatic lighting control based on ambient light with timing capability Specifications and compatibility Suitable for singlepole lighting circuits Works with standard AC mains within 110–240V range Intended for DIN rail installation in electrical panels or similar enclosures Usage scenarios Outdoor/security lighting: lights turn on at dusk and off after a set period or when daylight returns, improving security and convenience. Indoor stairways and hallways: corridor lights activate in lowlight conditions for safe navigation, with automatic off after daylight or timing. Garage or workshop lighting: automatic illumination based on ambient light, reducing manual operation and saving energy. How to use Mount the unit on a standard DIN rail in the appropriate electrical panel or enclosure. Connect the live supply (AC 110–240V) and the controlled lighting load to the relay terminals according to local electrical codes. Set the desired ambient light threshold and timer behavior as provided by the device (per its builtin adjustment options). Power on and verify automatic operation in the intended lighting conditions. Notes Package contains 1 piece. Material details of the enclosure are not specified. For installation, ensure power is turned off and follow local electrical standards and safety guidelines. This GRB801/02 module provides a practical, efficient solution for automatic lighting control, combining a twilight sensor, photoelectric timing capability, and DIN rail mounting in a compact, reliable unit.