Here is a used L737 Intercall Booster unit. The outputs are then 12.98 to 13.21 volts. The Unit has been checked out with the following results.
Nurse Call Cable, Nurse Call Bell Lead Universal 6.35mm Interface Emergency Call Button Cord 9.8ft Intercall Nurse Call Wire with Push Button Nurse Call Bell System
Intercall Nurse Call Over door Light Intercall 600 / Intercall 700 Call Point
L737 Intercall Nurse Call 600/700 Series Booster Power Supply Unit - ONLY £400!
Intercall Nurse Call L622 Standard Call Point for Intercall 600 700 Systems
Intercall Nurse Call L722 InfraRed Call Point for Intercall 600 700 Systems £72
Intercall Nurse Call - L753 Speech Call + Intercall PIR1 + 2xL733 Door Mo,L752
