Description: 1. Solar charging, get rid of the trouble of wired charging.2. Automatic induction engine, turn on when the car vibrates, and stand by when it is at rest.3. Adopt German imported chips for precise monitoring.4. The transmission distance is long, the signal is stable, and the transmission distance can reach 40 meters.5. Live alarm, the screen will appear red when alarming, and emit "DIDI" sound. Specification: -InternalSensorC500DisplayMonitorC500RepeaterExternalSensorInternalSensorWorkingfrequency33.92MHZ+/-20KHZ433.92MHZ+/-20KHZ433.92MHZ+/-20KHZ433.92MHZ+/-20KHZ433.92MHZ+/-20KHZTransmitpower8dBm8dBm18dBm8dBm8dBmTransmissionmodeFSKFSKFSKFSKFSKWorkingvoltage2~3.6V3.5~4.2V12-24V2~3.6V2~3.6VStandbycurrent1uA50uA1uA1uA1uAWorkingtemperature-40~+125degrees-20~+80degrees-20~80degrees-20~+80degrees-40~+125degreesSize66*32MM125*78*24MM90*25MM28*24MM66*32MMOpendistance40meters/40meters40meters40meters//Receivingsensitivity:-115dBmNote:1. When the tire is installed with a built-in sensor,a repeater needs to be installed.It is recommended to install the repeater for more than 6 wheels2: The repeater is only a signal amplifier3: Does not support the function of trailer replacementBatteryspecifications:CR2032///////Nightworkingcurrent:4mA////Workingcurrentduringtheday:2mA// Package Included:( Four options are available) Type1: 1 XDisplay Monitor Type2: 1 XRepeaterType3: 1 X InternalSensor Type4: 1 XExternal Sensor