The SR103AM will accept 24VAC/DC, 115VAC or 230VAC power, and is designed for single or dual N/C inputs or dual solid state inputs from a safety light curtain. The SR103AM provides 3 N/O outputs to route power to the coils of power contactors, plus 1 N/C auxiliary output for signaling purposes. External Device Monitoring is standard, and monitored manual or automatic/manual reset modes are available.Scientific Technologies Inc.www.sti.com800.479.3658