wireless service call button pager
wireless service call button pager SAW DEVICE ensuring stable signal transmitting signal transmitting distance: 1kmaaopen spac Feature of wireless service call button pager
1.SAW DEVICE ensuring stable signal transmitting2.signal transmitting distance: 1km(open space)3.stable registering avoided wrong number showing4.excellent temperature and humidity character, safe, stable and reliable.
wireless service call button pager
wireless service call button pager
