This little system works great, I use it in my stair shop and use both sensors with the main unit in my office. Having 2 sensors is good for stairs. They have been used on their battery for at least a few months and are still working. I recommend using good quality Duracell or Energizer batteries.
Optimized 433MHz Home Wireless PIR Infrared Motion Detector Sensor for Alarm System by KERUI
12 Review
🏠 Htzsafe Solar Driveway Alarm System: 1/4 Mile Long Transmission Range - Solar Powered, Weatherproof Motion Sensor & Detector DIY Security Alert System
10 Review
Stay Safe And Secure: Wireless Motion Sensor And Pager Bed Alarm For Elderly And Kids
19 Review
Driveway Alarm Wireless Motion Detector Alarm 600 Feet Long Range Outdoor Weather Resistant Motion Sensor & Detector Security Alert System Monitor Protect Outside/Inside Property
36 Review
HUANUO Adjustable Laptop Stand Riser For Desk - Fits Up To 15.6 Inch Notebook, Mesh Ventilated Cooling With 8 Tilt Levels For Improved Airflow & Ergonomics
29 Review
Effortlessly Navigate Your Laptop Or Desktop With The Perixx PERIPAD-501 Wired USB Touchpad
27 Review
Fitbit Versa 3 Smartwatch Replacement Band: TOYOUTHS Elastic Nylon Fabric Strap For Women & Men
50 Review
🔋 TalentCell PB240A1 | 24V Lithium Ion Battery with 22400mAh Capacity | Rechargeable Power Pack for LED Light Strip, CCTV Camera, Smartphone & More
26 Review