Fridge door alarm, ESP8266, Alexa notification

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Email and text message notification when white connector pins are shorted. All services are free. Battery powered wireless notifications using your WiFi, no app to install and no hub is required. Good for over 500 alerts using 3 AAA batteries, not included. Device does not use batteries unless sending alert, lifetime is limited only by shelf life of batteries. Rugged enclosure supports up to 250 lbs, designed to operate in dusty and moldy environments.

Add Email and Text Message SMS Notifications to Your Project or product.

APP ALERTS ON YOUR PHONE: Wifi door sensor, Tuya Smart or Smart Life APP control. No hub required and No fees charge. When door/window is opened

2 Pack WiFi Door Window Sensor Detector: Wireless Security Alarm Door Sensor, Tuya Door Open Contact Sensor, Compatible with Alexa,Google Home,Siri

When IoT Meets AI: Home Automation With Alexa and NodeMCU «

Doorsound - Freezer Refrigerator Door Alarm with Text

APP ALERTS ON YOUR PHONE: Wifi door sensor, Tuya Smart or Smart Life APP control. No hub required and No fees charge. When door/window is opened

2 Pack WiFi Door Window Sensor Detector: Wireless Security Alarm Door Sensor, Tuya Door Open Contact Sensor, Compatible with Alexa,Google Home,Siri

WSDCAM Freezer Door Alarm When Left Open, 3/15/30/60

Doorsound - Freezer Refrigerator Door Alarm with Text

ESP8266 NodeMCU Door Status Monitor with Email Notifications

ESP8266 NodeMCU Door Status Monitor with Email Notifications

ESP8266 NodeMCU Door Status Monitor with Email Notifications

Apple HomeKit Smart Home Device Wireless Light, Garage, On Off