✅ ABB 2CSK235321R1226 – IR Motion Detector with Twilight Sensor High-performance infrared motion detector with integrated twilight sensor, ideal for automatic lighting control in indoor or outdoor applications. Adjustable light sensitivity and time delay. Technical Specifications: Part Number: 2CSK235321R1226 Type: IR motion detector Function: Motion and twilight-based automatic switching Application: Hallways, garages, staircases, outdoor security Features: Adjustable time delay and lux level