Belkin has announced several new sensors for its WeMo home automation line, including the Door and Window Sensor, the Keychain Sensor, and the Alarm Sensor, the last of which triggers if an existing security system goes off. Another addition is a new Room Motion Sensor, which can track heat signatures up to 30 feet away within a 90-degree arc. The unit should ignore pets, and (through the WeMo app) not only let people set alerts or links with other devices but check the last detected movement in a given room.
