The Contact Closure Sensor detects the open-and-closed status of a pair of isolated contacts, such as a relay or switch. It is ideally suited for detecting contact closure on drapery controllers, thermostats, security contacts, and door strikes. The Contact Closure Sensor filters out false triggers associated with typical contact bounce. The device can be plugged directly into our Home Network Adapter connecting the sensor to the network. Additionally, the Contact Closure Sensor will work with other controllers that provide 5V power and accept digital logic (TTL) input. The Contact Closure Sensor connector is a standard 3.5mm stereo jack. Learn More

Our AC/DC Voltage Sensor monitors the on-and-off status of electronic components by detecting an AC or DC voltage greater than ± 2V. Voltages up to ± 24V can be connected to the AC/DC Voltage Sensor to determine the powered state of equipment, power strips (via a wall adapter), or a "ring" condition on a telephone circuit. The AC/DC Voltage Sensor is optically isolated and clamped by a transient voltage suppressor to ensure circuit isolation and protection. The device can be plugged directly into the Home Network Adapter connecting the sensor to the network. Additionally, the AC/DC Voltage Sensor will work with other controllers that provide 5V power and accept digital logic (TTL) input. The AC/DC Voltage Sensor connector is a standard 3.5mm stereo jack. Learn More