Voice Alarm Bell

We are offering voice alarm bell. scope of application: bal1-127g mining flameproof acousto-optic combination electric bell (hereinafter referred as combination electric bell) suitable for methane or coal dust explosion hazard of the coal mine voice or sound and light signals expression or on the teleportation warning. technical parameters: standards: gb - 2000, gb 3836.2 2000, 3836.1 mt 428-1995; explosion-proof marks: exd ⅰ; ac rated voltage: 36,127 v 50 hz; current rating: 0.35 a; sound radius: 150 m; optical signal visual range: 30 m; cable diameter φ: 14 to 22 mm.