The Wireless Alert CM monitors whether a volt-free contact, such as a relay or volt-free switch, is open or closed. It then automatically sends notification emails to a user-selected email address. The device body can be secured in position using an adhesive pad (supplied) and is provided with a 1.5m cable with bare ends, ready to connect to your equipment or switch.

Users can also configure delays (between 1 minute and 12 hours), whereby the contact must remain opened or closed for a certain period of time before an alert is sent. In addition to this, the device can send a scheduled summary email detailing a number of alert events, percentage of contact open and closed time, and current battery level.