Bolts serve as the sensor's contacts. After taking them apart and adding wiring plates, I discovered a single sensor with dual activation points. As an example for my second point, I'll use a point light bulb. The cottage proper is down below, hidden behind the kitchen furniture. If there is a wall between the sensor and the hub, then the three cabinets in the kitchen set, and finally the wall, the system will function as expected.
Protect Your Belongings with Wireless Water Leak Sensor Alarm - WER 90db Loud Buzzer, Longer Alarm Detection (Battery Not Included)
9 Review
Xiaomi Mi Smart Sensor Set
45 Review
Interconnect Lithium Battery Powered Kidde Smoke & Carbon Monoxide Detector with Voice Alert - Combination Smoke & CO Alarm
9 Review
Aqara Water Leak Sensor: Wireless Mini Flood Detector for Alarm System & Smart Home Automation - Works with IFTTT
31 Review
Lingito Rain Poncho: Buy 5, 10, or 🌧️ 15 Packs - Disposable Emergency Rain Ponchos for Ultimate Protection
8 Review
🍽️ S.O.S. Rations Emergency 3600 Calorie Food Bar (Cinnamon & Coconut, 2 Pack)
8 Review
🌧️ Premium Quality Disposable Rain Ponchos for Adults / Kids (6 Pack) - 50% Thicker Emergency Ponchos for Ultimate Waterproof Protection
8 Review
Clear Disposable Emergency Rain Poncho with Hood for Adults - 20 Pack
8 Review