Specification BatteriesRequired : 1 Brand : Hyuduo BulletPoint1 : There are two ports for solar panel auto-tracking sensors, including power supply +-and motor M. Packing list: 1 module, 2 probes. BulletPoint2 : Principle: Place a shield on the photoresistor. When light hits the obstruction and forms a shadow, the photoresistor on one side forms a difference with the other, controls the motor and finds the equilibrium point, which is the center of the light source. BulletPoint3 : A geared motor is recommended. The slower the speed, the better the effect. 5-5.5V regulated power supply voltage cannot be directly connected to the solar panel. BulletPoint4 : When the motor is connected to the circuit board, there is no difference between the positive and negative poles. BulletPoint5 : During the test, if the motor rotates in the opposite direction of the light source, the position of the motor is reversed. CompatibleDevices : Smartphone, Tablet ControlMethod : remote CustomerPackageType : Standard Packaging ExternallyAssignedProductIdentifier1 : 0738587700807 ExternallyAssignedProductIdentifier2 : 738587700807 ExternallyAssignedProductIdentifier3 : 00713757288507 ItemName : Solar automatic tracking module 5-5.5V DC Solar Energy Panel Automatic Tracking Single Axis Light Source Tracking Sensor Module ItemPackageDimensions_Height : 10.795 centimeters ItemPackageDimensions_Length : 1.7018 centimeters ItemPackageDimensions_Width : 6.604 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : gps-trackers Manufacturer : Hyuduo Material : Metal, Composite Materials ModelNumber : Hyuduogcn7gdi6o5 NumberOfItems : 1 PartNumber : Hyuduogcn7gdi6o5 ProductDescription : Specification: Item Type: Solar Energy Panel Automatic Tracking Sensor Voltage: 5-5.5V DC Current: <1.5A Port: Power + -, Motor M