Siemens power supply board used in fire alarm systems. This unit is a Siemens Power Supply Kit A, model number FP120-Z1, serial number S54400-S122-A1. It is primarily used as an independent power supply (70W) for security and fire protection systems. Its main uses and functions are: Primary Uses: Fire Alarm Systems: Serves as a power supply for fire control panels, compliant with European safety standards (EN 54-4). Intrusion Detection Systems: Used as an accessory to power intrusion detectors and various security systems. Operating External Devices: Provides two 24V outputs to independently power additional decentralized devices. Functional Features: Uninterruptible Power Supply (UPS): In case of main power failure, the unit automatically switches to battery operation to ensure continuous system function. Battery Charging and Monitoring: Charges batteries with thermal compensation and continuously monitors battery status and voltage. System Protection: The unit is short-circuit proof and supports current limitation to protect connected devices. Fault Signals: Provides dedicated outputs to send signals in case of power or battery faults. Its market price is 1700 SAR. The asking price is negotiable. Several units are available. Search terms: Alarm panel, extinguishing systems, fire systems, Siemens detectors, Siemens panel, fire bell, fire break glass.