The Cebek FE-111 module is a single rail 5VDC stabilized power supply. It can
deliver a maximum of 450mA, the output is fully regulated and short circuit
protected. A PCB mounted pre-set potentiometer is supplied to adjust the output
voltage (3 - 8VDC), to allow for long cable runs and supply voltage variations. The FE-111
module has a small enclosed transformer mounted on the circuit board. and LED to
indicate its operating.