Siren Marine Wired DC Relay PAM4. The 15mA operating current is constant across the operating range. The input voltages are polarity-sensitive and diode-protected. The Siren Marine PAM4 DC Relay is required to power or switch 12v systems that draw more then 1Amp via the internal outputs of the MTC. Specifications for Siren Marine PAM4 Wired DC Relay: Manufacturer: Siren Marine Color: Black Package Contents: Siren Marine PAM4 Wired DC Relay Siren Marine SM-ACC-DCRE: Wired DC Relay PAM4