Features: High-definition LCD screen: large-size high-definition display screen, the operating status is clear at a glance. Hidden installation wiring: large-spacing hidden wiring ports are used to increase installation reliability and reduce losses. Dual USB output: supports most USB interfaces on the market, and can charge mobile phones, iPads, cameras and other digital products at any time. Metal heat dissipation backplane: thickened heat dissipation backplane, improves heat dissipation performance, and can work normally under high ambient temperature. start, automatic wake-up: battery automatic repair, memory battery, when the battery is completely 0 power, the battery automatically repairs, start. PWM charging technology: adopts a three-stage PWM pulse automatic adjustment charging method of strong charging, balanced charging and floating charging, which effectively extends the service life of the battery. Multiple circuits, intelligent protection: built-in overheating, overcurrent, overcharging, short circuit, reverse connection and over-discharge protection. After the fault is eliminated, the controller automatically recovers without damaging the equipment. Intelligent control: APP real-time viewing and setting, viewing anytime, anywhere, saving time, effort and worry. Specification: Name: bluetooth solar controller Display: LCD display Rated voltage: 12V/24V (0V Start) Standby current: Less than 10mA USB output: 5V/2A Max Working temperature: -35℃~+60℃ Size: 13.4 x 7 x 3.5cm Color: As Shown Material: Aluminium Package Contents: 1 x WiFi bluetooth solar controller 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.