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Home Security System, Wireless 4G WiFi Alarm System with 1080p Surveillance Camera, 4.3" Touch Screen Home Burglar Alarm Compatible with Alexa Google HomeAmazon$49.99
KERUI WiFi Home Security Alarm System 8-Piece kit Door Alarm System DIY Siren Door/Window Sensors Remotes Burglar Alarm for House Apartment Office,Compatible with Alexa Google HomeAmazon$99.99
YBJ WiFi and GSM Wireless Alarm System for Home Security, DIY Burglar Alarm Kit with APP Remote Control, Motion Detector, Door and Window Sensor, Siren, Compatible with Alexa and Google AssistantAmazon$37.88
Door Alarm Sensor Window Alarms for Home Security Kids Burglar Safety SystemAmazon$8.39
Magnetic Reed Switch RC Recessed Wired Window Door Contact Sensor for Home Security and Burglar Alarm Systems 10 PcsAmazon$31.99
KERUI Home Security System Indoor Outdoor Weather-Proof Siren Window Door Sensors Motion Sensor Alarm with Remote Control More DIY, Wireless House Hotel Garage Shop Burglar Door Alarm, NO WIFI/GSM/APPAmazon$29.99
Arlo All-in-One Sensor with 8 Functions for Home Security System, House Alarm Sensor, Burglar Alarm, Smoke Detector and CO2 Detector Listening, Water Leak Detector, Door Sensor, 1 Pack - MS1001Amazon$19.99
eMylo Motion Sensor Alarm,Home Security Alarm System with Motion Sensor Alarm Indoor Infrared Sensors Protect Pet Friendly Portable Door Chime Bell Alert Burglar for Shop Home(USB Supply )Amazon$4.39
Magnetic Switch, Normally Closed NC Magnetic Reed Switch Window Door Safety Alarm Switch Metal Housing for Home Security and Burglar Alarm SystemsAmazon$14.99
VictorsHome Magnetic Reed Switch NC NO COM Surface Mount Wired Door Window Contact Sensor with Adhesive Paper for Home Security and Burglar Alarm Systems MC-38 5pcsAmazon