The single button controls four things: it turns the device ON, sets it to AUTO mode, turns it OFF, and adjusts the brightness level, and remembers the setting. The motion sensor functions correctly, but the light sensor's sensitivity is set too high, causing the light to activate even when there's already enough ambient light. The red charging LED is excessively bright, but it's probably not a major concern. The LEDs have a 22 Ohm series resistor, with a maximum ON current of 67mA, a minimum of 8mA, and a quiescent current of 25uA. The battery's actual capacity is significantly less than the advertised 300mAh; it's likely less than half that. It comes with a short microUSB charging cable and two adhesive-backed magnets for easy mounting and dismounting. They are functioning well at present, disregarding the battery's limited capacity. The item arrived promptly, along with other orders. The packaging was good, and it included a retail box.

The single button controls four actions: turning the device ON, AUTO mode, OFF, and adjusting brightness, and the selected setting is saved. The motion sensor functions well, but its dusk threshold is set too high, causing the light to activate even when there's sufficient ambient light. The red charging LED is excessively bright, though this is a minor concern. The LEDs use a 22 Ohm series resistor, with a maximum ON current of approximately 67mA, a minimum of 8mA, and a quiescent current of 25uA. The battery capacity is significantly less than the advertised 300mAh, likely only reaching half that amount at best. The product includes a short microUSB charging cable and a pair of adhesive magnets for easy attachment and detachment. Despite the battery capacity issue, the devices function well. Delivery took 20 days, which is double the 10-day estimate, though this isn't the seller's responsibility. The product arrived well-packaged in a retail box. The seller is responsive and recommended.