The FRM-1 Relay Control Module is intended for use in intelligent, two-wire systems where the individual address of each module is selected using the built-in rotary switches.
5-degree volume control levels, built-in 24V DC forced relay and selectable power (6W, 30W, 60W, 120W): these are only some of the best-in-class features of Honeywell’s volume controller range! Design