we are offering air velocity sensor transmitters. with cable inbetween sensor and tx :selectable working range using jumper &accuracy at 20 degc (68â°f), 45 % rh and 1013hpa 0...1ms (0...200ftmin) â± (0.04ms 7.9ftmin + 2 % of m. v.) 0... 1.5ms (0...300ftmin) â± (0.05ms 9.8ftmin + 2 % of m. v.) 0...2ms (0...400ftmin) â± (0.06ms 11.8ftmin + 2 % of m. v.) selectable output -: 0 - 10 v or 4 - 20 ma power supply - selv 24v acdc â± 20 % , probe length â�� 200mm, no display