Description This item is a digital tachometer and hall proximity switch kit. Both tools are made of high-quality plastic for wear resistance. The measuring range of the tachometer is up to 9999 rpm. or min and will show "1" or "-1" when the data is outside its measuring range. Function - This meter works with many types of devices - With digital technology, it is better to know what is real than to rely on guesswork. - The Hall sensor will light up to indicate power. - Shows measurement data accurately and is easy to install. - The meter is designed to snap into a rectangular hole for flush mounting. Specification -Color: mostly black - Material: plastic - Tachometer Size: 79 x 41 x 25cn or 31 x 16 x 9.8in -Hall Proximity Sensor Size: 40 x 22 x 12mm or 1.6 x 0.9 x 0.5inch - Power requirement: DC 8-24V 30mA - Measuring range: 10-9999 rpm. or min. - Refresh rate: 0.2-0.5S 120-1200 RPM or min 0.25-0.06S at 2400-9999 RPM or min. - Measurement accuracy: RPM andlt 5000, ± 2 RPM andgt 5000, ±3. - Hall proximity model: CF5135C-Z - Detection range: 10mm - Detected objects: Magnet - Response frequency: 9999Hz, 999.9Hz, 99.99kHz - Sensor wiring: brown means power blue means power- black means signal. - Operating temperature: 0 to 50°C. Description This item is a digital tachometer and hall proximity switch kit. Both tools are made of high-quality plastic for wear resistance. The measuring range of the tachometer is up to 9999 rpm. or min and will show "1" or "1" when the data is outside the measurement range. Function This PRM meter works with many types of devices Thanks to the digital screen, it's good to know the actual turnover instead of relying on estimates. The Hall sensor will light up to indicate power. It shows the measurement data accurately and is easy to install. The meter is designed to snap into a rectangular hole for flush mounting. Specification Colour: mostly black Material: plastic Tachometer size: 79 x 41 x 25cn or 31 x 16 x 9.8 inch Hall Proximity Switch Size: 40x22x12mm or 1.6x0.9x0.5inch Power requirement: DC 824 V 30 mA Measuring range: 109999 rpm or min. Refresh rate: 0.20.5s 1201200 RPM or min 0.250.06 sec at 24009999 rpm or min. Measurement Accuracy: RPMandlt 5000, ±2 RPM andgt 5000, ±3. Hall proximity model: CF5135CZ Detection Range: 10mm Objects detected: Magnet Response frequency: 9999Hz, 999.9Hz, 99.99kHz Sensor wiring: brown means power blue means power black means signal. Operating temperature: 0 to 50°C. package list 1 x tachometer 1 x Hall proximity sensor