Product Description The wireless host is the core unit of wireless control equipment in underground coal mines. It is mainly composed of a mine-used intrinsically safe box, wireless signal receiving and transmitting module, power module, central processing unit (CPU), and interface circuits.
link:https://www.rlycn.com/mining-spray-dust-suppression-system/dust-suppression-system-main-units-and-accessories/wireless-host-unit.html