Smartcoounter Retail People Counter - Smart Traffic Counter, Hourly & Daily Statistics Door Counter For Retail, Data Storage, Battery Operated Visitor

Smartcoounter Retail People Counter Security Checkpoint - Smart Traffic Counter, Infrared Wireless Visitor Counter, Battery Operated Customer Counter,

Door Chime, Door Sensor Chime For Door Opens - Door Ringer With 500ft Operating Range 52 Chime Adjustable Volume Mute Mode LED Indicators -Entry Alert

Tapo Door Sensor Mini, Requires Tapo Hub, Long Battery Life W/Sub-1G Low-Power Wireless Protocol, Contact Sensor, 15mm Wide Gap Allowed, Real-Time

Ring Alarm Contact Sensor - 2nd Gen | Instant Window & Door Alerts | Approximately 3-Year Battery Life | Slim Design Fits Any Frame | Easy

Ring Alarm Contact Sensor 2-Pack - 2nd Gen | Instant Window & Door Alerts | Approximately 3-Year Battery Life | Slim Design | Easy Installation | Base

Sanjie Wireless Door Chime Sensor, When Door Opens, Entry Alarm For Business/Home/Kids, 5 Adjustable Volume Ringer Alert 2 Sensors + 1 Receivers, 500

JIAWANSHUN People Counter,Bi-Directional Visitor Counter With Infrared Door Sensor, 0-65Feet Wireless&Dual Power Supply,Ideal For Malls, Museums,