1. Supports writing the address and parameters of lamps with multiple chips. 2. LCD interface display, easy to operate. 3. It can be powered by external power supply or built-in key battery during operation. 4. Supports console simulation function, and can support 18 channels to be controlled at the same time. 5. A variety of test effects are provided for users. 6. Supports 0-255 grayscale settings. TECHNICAL PARAMETERS Input voltage: Type-C DC 5V2A (power bank can be connected) / DC12V-24V 1A / Built-in 4000mh lithium battery Output port: Single data output (-485 / 5V-TTL) Pixel driven: Upper 4096 channels Output power: Less than 10W Working temperature: -15℃~50℃ Relative humidity: ≤50% RH IP grade: IP20 (Prevent people from touching the components inside electrical appliance, prevent object which diameter is more than 12.5mm from in, no special protection to water or moisture.) Working environment: 1) Please do not install the controller in magnetic, high pressure, high temperature or seriously wet environment. 2) Please do connect the earth safely in order to reduce risks of fire and damage which cause by short circuit. Color: Black Material: Metal+Plastic Package Contents: 1 * BL321 DMX512 stage lamp address writer controller 1 * cable 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.