PS-121 Modules supply 24 VDC power for the BLH Nobel PS transmitter family: PS-1020, PS-1045, and PS-1050. Each module is capable of powering a single PS Transmitter with six transducers or two PS Transmitters with four transducers. Units are factory conigured for either 115 or 220 VAC operation. A spare fuse is included. “Snap on” DIN Rail mounting signiicantly reduces system installation and start-up time. Close mounting proximity to PS Transmitters is recommended to reduce excessive wiring and reject electronic noise interference.