UZB27 inserted between a typical 230V / 12VDC power supply and the powered device allows the device to work in the event of a 230V power failure. The operating time of the device in the buffer mode depends on the current consumed. For example, for 0.2A current (2 RCP78AR readers) this time will be at least 30 hours.

Optical (for installer)

• LED red – charging
• Green LED – output voltage

Audible (for the user)

• …….………… ….beep..……….…. ………beep… – no input voltage, battery OK
• …..………beep.………….beep…….……..beep… – no input voltage, battery is low
• …beep….beep….beep….beep….beep….beep… – no input voltage, several minutes of operation left
• be e e e e e e e e e e e e e e e e e e e e e e e e …p – exceeding the output current above 1.5A
• beep..beep..beep………beep..beep..beep……… – no battery