The water meter adopts the transmission sensor of high sensitivity, with a strong ability of anti-interference, with four core wire and double signal output, It can read the using water volume in a remote distance3, the date is dependable and correct, and remain the measurement function of the bass water meter. It can be connected with the computer so as to tasy for centralizing management. The farthest transmission distance between the water meter and flow rote collection device is thirty meter, The flow rate collection device has man types, such as DS-L1~6(The suffix of the type means the numbers of the remote-reading water meter which can be used) and one system assembly can connect two hundred and fifty collection devices of remote-reading water meter at most; The farther transmission distance of system assembly is two thousand meters, while the transmission consuming management software can deal will the system formed by two hundred at most, it can also use the portable compouter to collcet data at the spot and transmission it to the microcomputer.