Mine intrinsically safe speaker Mine explosion mine explosion-proof stereo speakers

Mine intrinsically safe speaker Mine explosion mine explosion-proof stereo speakers ZB127 type mine explosion-proof and intrinsically safe speaker Mine speakers, explosion-proof speaker Name: Mine explosion-proof and intrinsically safe speaker Model: ZB127-YX function Description: play background music, mine safety knowledge and other major technical parameters: System Capacity: Unlimited (AC127V power supply cable to meet the can); communication distance: 2KM within (and field environment). System Capacity: Unlimited (AC127V power supply cable to meet the can); communication distance: Open. Cable diameter: 9-12mm; signal cables: MKVVRP, 3X1.0 shielded parallel cable power cable: MKVVR, 2X1.5 / 2.5 (Description of the power cable specifications are 2X1.5 and 2X2.5 two kinds, the entire line Number of speakers within 20, then select 2X1.5 specifications; quantity speakers entire line of more than 25, then select 2X2.5 specifications). External power supply: AC127V; Rated working current: ≤400mA explosion protection: Intrinsic safety Exd [ib] I SNR:> 90dB Dimensions (L × W × H): 260mm × 264mm × 320mm Name: Manager Liu Mobile 15562337281 QQ ; 2964406456 Want: meikuang008 Address: Jining High-tech Zone