Ecobee SmartSensor for Doors & Windows vs Heiman Window Door Alarm

The Ecobee SmartSensor for Doors & Windows wins overall on a higher owner rating, broader integrations, and added occupancy and motion sensing, plus HVAC-pausing. The Heiman Window Door Alarm counters with a lower price, no-hub Wi-Fi setup, and a built-in audible siren.

The Heiman Window Door Alarm connects directly to Wi-Fi with no hub and includes a 65 dB onboard siren, while the Ecobee SmartSensor for Doors & Windows requires an ecobee thermostat but adds occupancy sensing and can pause your heating or cooling on an open door.

The Heiman Window Door Alarm does, connecting straight to 2.4GHz Wi-Fi through the Smart Life app with no bridge. The Ecobee SmartSensor for Doors & Windows is not standalone and requires an ecobee thermostat to function at all.

The Ecobee SmartSensor for Doors & Windows reaches Google, Alexa and Apple HomeKit through an ecobee thermostat, while the Heiman Window Door Alarm works with Alexa and Google but has no HomeKit or Matter and unconfirmed Home Assistant support. The ecobee is the broader choice, though its access runs through the thermostat.

Buy the Heiman Window Door Alarm if you want a cheap, standalone Wi-Fi contact sensor with a built-in siren and simple phone alerts, and you already use the Smart Life app. Expect limited notification customization and no HomeKit or Matter.

Buy the Ecobee SmartSensor for Doors & Windows if you own an ecobee thermostat and want to pause HVAC on an open door plus occupancy sensing and wider platform access. Its full security features require an ecobee Smart Security subscription.