A 4-way relay card provides four single pole relays with connection terminals to the common (C), normally open (NO), and normally closed (NC) contacts. The relay contacts are rated at 1 Amp @ 0 to 30 VDC; reducing to 300 mA @ 48 VDC.If fitted to a DGP, two relay modules can be connected together in daisy-chain fashion to provide up to eight relays on ATS1201. When fitted to the ATS control panel or 4-door/4-lift DGP, only one relay module is allowed providing four relays. An LED is provided for every relay to indicate activation.