System Sensor HCRL2-LF Ceiling Mount Sounder, Low Frequency, Red

L-series 2nd Gen Lowfrequency Sounder Ceiling, Red designed for NFPA 72 sleeping space requirements. Main Features 520 Hz 10% square wave tone, NFPA compliance LED technology for Low Frequency Sounder Strobes provides lower current draw Digital Voltage Meter (DVM) diagnostic test points for Sounders and Sounder Strobes Field-selectable candela settings on ceiling units 15, 30, 75, 95, 115, 150, and 177 High/Low tone options to optimize current draw for a wide variety of applications Rotary switch for candela, tone and volume selections Sounder-only models also offer a Coded setting Mounting plate provides plug-in design for easier installation Shorting springs to check wiring continuity