... -proof,hospital components 2 adopt aluminum alloy board,flush-mount type Features:Main functions:1 MY-GB4 substation,explosion-proof,hospital ... , and the voice is lively and clear.2. Flush-mount type, which is anti-dismantle and anti-damage3. The substation can ... master station in the control room.4. Can connect handset type call button "AN+ Mike" 5. It is specially used in the ...