The Simplex 4098-9860 is a two-wire, supervised relay module designed for installation either remotely or within a standard electrical box base. It provides a dry-contact SPDT output, supports power-limited and non-power-limited loads (up to 2 A at 30 V DC resistive, and up to 0.5 A at 125 V AC resistive), and draws its supervision power from the addressable loop, eliminating the need for a separate power supply. Engineered for integration with TrueAlarm analog sensor bases (specifically the 4098-9780 base), it enables precise remote switching or signalling while maintaining full supervisory monitoring for fire-alarm applications.