Mallory Sonalert Products Inc. Sales Outline Drawing Part # MSR320 Revision B Specifications: Sound level Category Mode of Operation Mounting Voltage Rating Frequency Loudness (Min. Voltage) Loudness (Max Voltage) Current Draw Current Draw Storage Temperature Operating Temperature Weight (Typical) Housing Options Dimensions: Inches (mm) Medium Sound Level Continuous Printed Circuit Board (see note B) 3 to 20 Vdc 3400 Hz 400 Hz 62 dB(A) min. @ 2 FT and 3 Vdc 80 dB(A) min. @ 2FT and 20 Vdc 3 mA Max @ 3 Vdc 16 mA Max @ 20 Vdc -30C to +80C -20C to +65C 3.5 grams Valox (UL94V-0), Color Blue For other options contact factory