New intelligent 2-in-1 doorbell with infrared sensor, hotel reception system, warehouse alarm system, one sensor and two receivers

【Smart Detection, Automatic Doorbell】 This 2-in-1 doorbell with an infrared sensor automatically notifies you of visitors' arrivals, triggers an alarm when someone is in the warehouse, and automatically detects the movements of elderly people. Manual ringing or constant monitoring are a thing of the past: smart detection ensures automatic notifications. One sensor combined with two receivers offers extended range and greater installation flexibility. 【One Sensor, Two Receivers, Double Coverage】 Unique 2-in-1 design: one infrared transmitter and two independent receivers. One sensor: for installation on doors, in hallways, and warehouse entrances. Two receivers: for placement in different rooms or on different floors. Simultaneous reception: Both receivers ring at the same time, so you never miss a notification. Independent installation: Install the receivers separately as needed (e.g., bedroom and living room, reception and office). 【Infrared Detection, Automatic Activation】 360° all-around detection: wide detection angle, no blind spots. Detection range: 3 to 8 meters (product dependent). Intelligent motion detection: automatic activation upon motion detection. Contactless: no doorbell or physical contact required – for optimal hygiene and convenience. 【Wireless Connection, Easy Installation】 Wireless design: wireless connection between sensor and receiver. Easy installation: no drilling or wiring required, simply insert batteries. Mount with adhesive tape or screws, installation in 5 minutes. Range: 30 to 50 meters outdoors (environment dependent).