Aeotec Multipurpose Sensor vs Ring Window and Door Contact Sensor (2nd gen)

The Aeotec Multipurpose Sensor is better overall on broader integrations, added temperature and vibration sensing, and more alert types. The Ring Window and Door Contact Sensor (2nd gen) counters with a lower price, a higher owner rating and longer battery life, but it only works within a Ring Alarm system.

Ecosystem and versatility. The Aeotec Multipurpose Sensor is a Zigbee multi-sensor that works across major platforms and adds temperature and vibration sensing, while the Ring Window and Door Contact Sensor (2nd gen) is a contact-only device that requires a Ring Alarm base station and skips Google Home and HomeKit.

The Ring Window and Door Contact Sensor (2nd gen) does. Its two CR2032 cells are rated around 3 years, compared with about 1 year for the Aeotec Multipurpose Sensor's CR2450. The Ring is the lower-maintenance option on power.

Buy the Ring sensor if you already run or are building a Ring Alarm system and want a cheap, slim, highly rated entry sensor with instant alerts, tamper detection and multi-year battery life. It integrates with Alexa, IFTTT and Home Assistant within the Ring ecosystem.

Buy the Aeotec Multipurpose Sensor if you want broad platform support and more than plain open/close, it also reads temperature and detects vibration for automations. It suits SmartThings, Hubitat and Home Assistant users running a Zigbee hub.