The moisture meter can quickly measure the moisture content of the grain. 1. Production Material: The controller housing is made of high quality metal with grooves designed to protect the internal circuits from thermal overload due to good heat dissipation. 2. Brushless Motor Driver: The brushless motor driver provides consistent speed, sensitive braking, and direction change control. 3. High-performance cable and durable interface: The high-performance cable and durable interface ensure a low failure rate for long-term use. Suitable for 36V, 48V, 500W motors. 4. Easy Maintenance: For mountain bike lithium battery modification, easy maintenance, electric bike and moped modification conversion, greatly improve the riding pleasure, suitable for cyclists, such as challenges. 5. Easy to use: Easy to use and excellent workmanship. No difficult requirements, even if you are using it for the first time. Specification: Item Type: Rectangular Wave Controller Weight: about 303 g / 10,7 oz Material: Aluminum Alloy Voltage: 36V, 48V Current: 22A List of packages: 1 x Controller 1 x Manual Note: The communication protocol is communication protocol 2 and communication protocol UART.