Amazon.com: Thermote X Wireless NIST Traceable Remote Temperature Sensor. WiFi with Text/email alerts. 24/7 Monitoring. No Subscription Fees. : Electronics
WiFi Wireless Water Detection Sensor
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OPS243-A Doppler Radar Sensor with WiFi/Bluetooth Interface - OmniPreSense
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Industrial IoT Long Range Wireless Light Sensor Transmitter
Esp8266 Esp-01s Esp01s Serial Wireless Module Wifi Sensor (esp8266 Esp-01 Updated) For Arduino Wifi Module Advanced Version Diy - Replacement Parts - AliExpress
WiFi Door and Window Contact Sensor | Smart Home Monitoring
Amazon.com : SEHOMY 1 Pack WiFi Door Sensor Alarm, Smart Door Open Contact Sensor Realtime APP Notification Compatible with Alexa Google Assistant, Home Security for Safety, Wireless Window Detector Burglar Alert : Electronics
Industrial IoT Wireless Soil Moisture Temperature EC Sensor Transmitter
TempSpot - WiFi Water Temperature Alarm
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