Intercom power supply, can replace AIPHONE Model PS-1820
You can use instead of AIPHONE power supply.
Power supply plug-in. You can use in any kind of video intercom system for apartment who use 18 VDC

Specification:
Output: 18VDC 4A
The input voltage range: AC 120 V
The input voltage frequency: 50 to 60Hz
Approved CUL, UL, and CSA