The RS PRO Piezo Buzzer audio Indicator has Operating temperature range of -30°C to +85°C and voltage range of 7V dc to 18V dc. The material used for buzzer is NYLON UL-94 V-0 (BLACK) and it has Tin-Plated Tapped Screw type terminal.
Sound Level 95dB Tone Type Slow Pulse Diameter 42.5mm Height 32.5mm