mining acoustic and optical sound alarming device

1. Safety certificate of approval for mining products. 2. Flame proof certificate 3. ISO 9001-2008

      mining acoustic and optical sound alarming device is a warning signal used in the coal mine roadway turnning and cross to remind the wiring motor drivers and pedestrians ,as well as in the equipments needing voice warning and working status warning.                                                                                                                                                           The function features adopts the latest large-capacity voice chips ,the control circuit adopts non-spark electronic switch and uses proximity as sensors ,water-proof ,explosion-proof ,reliable performance ,easy installation ,long life span and low failure rate.                                                         Technical parameters containing:a.power voltage AC127V; b.the maximum output opening circuit voltage DC12v+0.5v;c.the distance of advertiser and trigger from the main chassis low than 150 meters ;d.light flicker frequency 30times per minute;e.light visibility distance low than 110 meters ;f.sound output power0~5w.

mining acoustic and optical sound alarming device