STITCH by Monoprice Wireless Smart Door/Window Sensor; Works with Amazon Alexa and Google Assistant for Touchless Voice Control, No Hub Required - Monoprice.com
Monoprice Wireless Smart Motion Sensor - White| Works with Amazon Alexa & Google Home, No hub required (supports IFTTT) - From STITCH Collection - Walmart.com
Wireless Sensor Networks: Akyildiz, Ian F., Vuran, Mehmet Can: 9780470036013: Amazon.com: Books
Wireless Sensor Networks A Systems Perspective (Artech House Mems and Sensors Library): Nirupama Bulusu, Sanjay Jha: 9781580538671: Amazon.com: Books
Localization Algorithms and Strategies for Wireless Sensor Networks: Guoqiang Mao, Baris Fidan, Guoqiang Mao, Baris Fidan: 9781605663968: Amazon.com: Books
Wireless Sensor Networks: Architecture - Applications - Advancements: Vijayalakshmi, S. R., Muruganand, S.: 9781683922254: Amazon.com: Books
Amazon.com : XODO DS1 WiFi Wireless Sensors for Doors and Windows - Smart Open Entry Sensor - Contact Door Window Sensor - Easy Installation - DYI Home Protection - APP Control Alert Function - 2- Pack : Electronics