1. This product is composed of precision components, so please use it carefully and do not drop it. 2. When installing this product, if the eccentricity or deviation angle is too large, its service life may be shortened. 3. Do not use it in environments with strong impact, vibration, corrosive substances, large magnetic fields, high temperature, high humidity, or acid-alkaline conditions. 4. The error in the number of pulses may be caused by power ON or OFF. After the power is turned ON, there is a delay time of 0.5 seconds. 5. After the product is fixed, do not pull the cable with a force exceeding 29.4N. When there are high-voltage lines or power lines nearby, please cover the cables with conduits. When wiring, be careful to avoid short-circuiting between the terminals and ensure correct wiring connections. Incorrect wiring may damage the internal circuit. It is recommended to conduct insulation protection for unconnected wires. The shielded wire should be grounded. Do not disassemble the product by yourself. Safety Precautions: 1. The encoder and the shaft should not be rigidly connected. Use elastic connectors. The photoelectric encoder is a high-precision sensor, and it is strictly forbidden to knock during installation. 2. Please do not wind the encoder output line and power line together or run them in the same slot, and do not place it near the switchboard. 3. Incorrect wiring may burn out the internal circuit. When wiring, please connect according to the encoder label and turn it on only after checking. Color: As Shown Material: Metal Package Contents: 1 x Rotary Incremental Encoder 1 set x Screw Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real thing. The measurement allowed error is +/- 1-3 cm.