BC-8F Electronic Buzzer is developed specifically for lifting machinery, gantry cranes, and bridge cranes by our plant with foreign electronic product technology. With our advanced process technology and testing equipment, the product is enjoying a competitive edge in domestic market in terms of technical performance and style. Aluminum alloy is adopted for shells of BC-8F Electronic Buzzers BC-8, and electronic integrated circuits for inner cores. BC-8F l Electronic Buzzer features lightweight, waterproof, anti-strong-shock, safe and convenient. With such advantages, it is the best choice for safety alarm of lifting machines, gantry cranes, bridge cranes, overhead traveling cranes and heavy duty equipment in metallurgy and mine industry. Voice module can be produced out of voice content or magnetic tapes provided by customers, to realize voice tips. Operating Voltage: (optional) AC 110V-380V DC24V Operating Current: 1A Power of Sounder: 10W/107dB Protection Type:IP56 Sound Frequency: 800Hz, Intermittent alarms with interval of 1 second. Weight: 2.25kg Default sound L can change when order