Audible-visual electronic buzzer(industrialalarm Bc-8 audible-visual electronic buzzer is developed specifically for lifting machinery, gantry cranes, and bridge cranes by our plant with internationally up-to-date electronic 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-8 audible-visual electronic buzzers , and electronic integrated circuits for inner cores. A flasher which consists of leds is equipped on top of the buzzer. The product consumes less power and its service life is over 20, 000hours. . Bc-8 audible-visual 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 crane sand 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. Color:(optional) red, yellow, green Operating voltage: (optional) ac 24v-380v Operating current: 1a Supply frequency: 50hz-60hz Power of sounder: 6w/106db Protection grade: ip56 Weight: 2.7kg Sound frequency: 800hz, synchronous intermittent Sound and light alarms with interval of 1 second. Color:(optional) red, yellow, green Operating voltage: (optional) ac 24v-380v Operating current: 1a Supply frequency: 50hz-60hz Power of sounder: 6w/106db Protection grade: ip56 Weight: 2.7kg Sound frequency: 800hz, synchronous intermittent Sound and light alarms with interval of 1 second.