Smart fob for the control of YoLink devices. Introduction: A smart handheld fob, for use with YoLink "output" type products, such as relays, locks, smart plugs and outlets, light switches, sirens, strobes, etc. Using Control-D2D device-to-device pairing, the OnOffFob can control two individual devices, or two groups or zones of devices, such as controlling all interior lights versus all exterior lights. General Features: Two pairs of ON and OFF buttons Keyring loop (removeable) Battery-powered (two standard alkaline AAA batteries, included) LoRa long-range/low-power technology offers 2+ years battery life, compared to 1+ year for other brands LoRa long-range/low-power technology allows for up to 1/4 mile open-air wireless range Compatible with YoLink Control-D2D device-to-device pairing; can directly control compatible YoLink devices, like a YoLink Relay or Smart Plug. learn more Please note: the OnOffFob can operate without an internet connection and without a YoLink hub, making it ideal for standalone (for example, one siren and one OnOffFob) applications, offline and off-grid application. But, the app will not function for the OnOffFob in these cases, and no low battery level notifications will be sent, the device health (signal level, etc.) can not be checked, and firmware updates (product enhancements, etc.) can not be performed without a connection to YoLink hub and YoLink app account. Button Features: Upper ON button: turns on or activates device #1 or group of devices #1 Upper OFF button: turns off or deactivates device #1 or group of devices #1 Lower ON button: turns on or activates device #2 or group of devices #2 Lower OFF button: turns off or deactivates device #2 or group of devices #2 What's in the box? (1) OnOffFob (batteries included) (1) Quick Start Guide Warranty: Two Years