... , hospitals, computer room,meeting rooms and other public places. pir sensor switch Features: 1.auto-sensing, entering the region, the ... : φ95 × 35mm11.Contact the working life: 50 million pir sensor switch Instructions for use: 1. according diagram connected switch, ... switch automatically closed. pir sensor switch Use Note: 1.Wiring installation shall not be charged, non-load short-circuit, to be ...