$59.99

The model D-21 is a special-purpose, digitally-coded radio transmitter. It is used in conjunction with various types of security sensors with circuits which are normally open. The F-21 transmitter sends a radio signal to any of Linear's digitally coded receivers. The transmitter is powered by a self contained 9-volt transistor battery.

New with one year warranty.

Produkt-Code: D-21-315