Usage Tips:Features: IP65 waterproof, allowing you to drive in the rain. Accurately monitor tire pressure all the way. High precision LCD screen with time display. High volume alarm sound warning. Long receiving distance, stable signal. With motorcycle battery voltage detection, display, low voltage alarm function. Specification: Material: Plastic Color: As shown Receiver: Working temperature: -20~+80 Power-on voltage: DC 1.5V(1 x AAA Battery(Not Included)) Frequency: 433.92MHz20.00MHz Sensor: Working temperature: -20~+80 Pressure range: 0~3.5bar Pressure precision: +/-0.1bar Accurancy temperature: +/-3 Transmitting power: Less than 10dB Frequency: 433.92MHz20.00MHz Bracket installation instructions: Unscrew the 2 screws, put on your motorcycle/electric bike/bicycle and tighten; Place the mounting of the bracket toward the position you need, and confirm that the bracket is firm; Install the tire pressure receiver on the bracket, tighten it and then lock it; use the ball to rotate the tuning knob to move the joint to adjust the appropriate angle. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Package Contents: 1 X Receiver 2 X Sensors Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.