AcuRite 01166M 3-Sensor Indoor Temperature and Humidity Remote Monitoring System Includes three (3) indoor temperature and humidity sensors with digital displays to provide current conditions at-a-glance. Freestanding sensors for tabletop use and integrated keyhole for easy wall-mounting. Monitor your sensor data online via browser, set phone and email alerts, view trends, and more with the complimentary my AcuRite software. Free iOS and Android App allows you to create email and phone alerts to notify you when conditions change or your presets are reached. Smart Home Environment System includes: smartHUB, three (3) Room Sensors, ethernet cable, power adapter, quick start guide, instruction manual.