Harmony SSLM solid state relays are ready to use modular relays with SCR/MOSFET outputs for greater switching density. The unique IP20 housing design and integrated heat sink with no exposed metal surface offers compactness and enhances operating conditions of the relay. SM relays are DIN rail mounted and available with zero voltage switching for resistive load and random switching for inductive load applications. This output module is turned on with the application of of voltage. This module will accept from 4 VDC to 28VDC. This module will switch 3A from 12 VAC to 280 VAC single phase. Output module has a black housing. Output module is 3.15 inches tall, 0.3 inches wide and 2.48 inches deep. The module weighs 0.07 lbs. Output module is UL component recognized and CSA certified. This product is certified by UL, CSA, EAC and CE marking. It supports symmetrical DIN rail mount. Harmony Solid State Relays are the complete solution for 1 phase and 3 phase, slim, modular DIN rail and panel mount offer. SSR relays offer slim interfaces, modular DIN rail and panel mount relays. A complete, innovative and compact solution for industrial applications.