Feature 1Support USB cable charging and solar charging,ensuring that the tire pressure monitoring system can work continuously. 2Our TPMS has five alarm modes, fast leak alarm, high / low pressure alarm, high temperature alarm and sensor low pressure alarm. 3Big LCD Screen Auto Backlight, Easy Reading Under Any Light Environment Supports smart backlighting. 4Support up and down 45 and left and right 45 adjustment. Receiver angle adjustable, 5Split support, more convenient disassembly and assembly. Specifications: Receiver parameters Power supply mode:USB power supply,Solar Power supply Working voltage:DC 5V Pressure unit:bar / psi Temperature unit: / Operating temperature:-20 -- 85 Storage temperature:-40 -- 125 Built in sensor parameters Pressure range:0-5.6bar / 0-81psi Low pressure alarm value: 1.8ba High voltage alarm value: 3.2ba Pressure accuracy 0.1ba / 1.5psi Water Resistant grade:IP67 Battery built in CR2450 button battery (non removable battery) battery life: 2-3 years Package List 1 * Receiver 4 * Sensor 1 * anti skid pad 1 * USB cable