Smart car TPMS tire pressure monitoring system, solar powered, TPMS digital LCD screen, USB car security alarm, tire pressure sensor (new)

Note: Please press and hold the left button for more than 3 minutes to turn on the monitor. If this does not work, please try again after charging. Parameters 1. Monitoring System Housing Operating Voltage: 3.7-5 V Storage Temperature: -30 °C to 90 °C Operating Temperature: -30 °C to 85 °C RF Transmission Frequency: 433.92 MHz - 50 kHz RF Signal Sensitivity: -90 dBm Display Mode: Color LCD Current Consumption in Bright Screen Mode: 6 mA Current Consumption in Black Screen Mode: 4 mA Dimensions: 85 × 95 mm 2. External Sensor Battery Life: 24 months Operating Voltage: 2.1-3.6 V Storage Temperature: -30 °C to 90 °C Operating Temperature: -30 °C to 85 °C Temperature Resolution: 2 °C to 25 °C Pressure Range: 0-5.0 bar Pressure Resolution: 0.1 bar Ingress Protection Rating: IP67 Transmit Power: 10 dBm Transmission Frequency: 433.92 MHz Dimensions: 21 mm × 17 mm Weight: 8.0 g Lithium battery: CR1632 Features: Solar charging; High and low pressure and leak detection; Alarm; LCD screen, simple user interface; High accuracy, using imported Freescale chips; Real-time tire pressure and temperature monitoring; Smart start: automatic standby when parked, automatic wake-up when started. Two interchangeable units (PSI/Bar), you can choose the one you prefer. Replaceable sensors/battery Description: Troubleshooting sensor problems: replace the sensor (fan).