Urmet 5454402 2-channel and 2bp radio transmitterbattery type cr2032, lithium battery useful life 7 yearsavailable channels 2 leftbrown and right greennumber of receiverschannel 4 in direct mode unlimited in 'radio bus' mode rangeenbsp in the same room 100m50m in a free and unobstructed field of viewreduction of the flow rate in the presence of metallic elements, crossing of walls or bulkheads.Operating temperature - 10c to 50relative humidity maximum 70protection ip54 ''
