1GT101DC, Honeywell single hall effect sensor Sensing Type:Single Hall, Housing Diameter: 17,9 mm [0.70 in]. Barrel Length: 31,8 mm [1.25 in]. Supply Voltage: 4.5 VDC to 24 VDC. Operating Frequency: 2 Hz to 25 kHz. Operating Temperature: -40 °C to 150 °C [-40 °F to 302 °F] Connection(s) 137 mm [5.4 in] leads. Please allow 2 weeks for delivery if no stock is showing 25 pc min order please.