Simplex 4100-3109 IDNet Addressable Interface ModuleThe Simplex 4100 3109 is an IDNet Addressable Interface Module for use with 4100ES Fire Control Panels. Features 250 point capacity; electrically isolated output with two short circuit isolating Class B or Class A output loops, 1 block; standard on EPS with IDNet 2 Module; alarm currents for 50 and above devices includes 20 device LEDs in alarm . COMPATIBLE ACCESSORIES 4100 3111 IDNet Short Circuit Isolating Loop Output Module; mount up to two on a