Mine vehicles and signal contact device signal contact device employing car 
 Features 
 ? The models that can play point and can talk to each other, for roadway maintenance, off track. Transporting large items such as communications. Signal is accurate, reliable, clear and noise-free intercom communication range 1-2 km. 
 Scope of this unit 
 1. Incline winch vehicles and car drivers or personnel and other personnel winch room communications; 
 2. Shaft repair, maintenance personnel and communications between the winch driver. 
 ? Voice carrier frequency 1720KHZ ± 0.5KHZ 
 ? Voice receiving sensitivity ≤ 5dbuV 
 ? Whole host ≤ 150mA quiescent current ≤ 30mA auxiliary engine 
 ? ∠ 450mA maximum operating current 
 ? 0.5-1.2W transmit power 
 ? Deviation ≤ 5KHZ 
 ? Working voltage DC12V ± 1.8V 
 ? Modulation FM 
 ? 2 switching outputs 
 ? Charging time ~ 127V, 220V direct charge 8 - 12 hours 
 Use of the environment 
 ? Ambient temperature -10 ℃ ~ +40 ℃, relative humidity ≤ 95 ± 3% (25 ℃) 
 ? Can have gas and coal dust explosion hazard environments. 
 Contact: Xu West hope 
 Tel: 15154770193 0537-2352509 
 Fax :0537 -2352179 E-mail: 2286818002@qq.com 
 QQ: 2286818002 Want: zhongmao0704 
 Name: Material Co., Ltd. Shandong, coal mining 
 Customer Service: 15192430161/0537-2658519 
 Address: Torch Development Zone, Jining City, Shandong Province Road 69 (Gimhae poly North)