1. This product is installed in an area with dogs, the detection range is more than 15 meters, and the hanging height is not more than 1.5 meters. It can be placed on trees, hung on poles and fence posts. In order to achieve good results, the area where this product is used should be an open area without large obstacles. This product uses ultrasound to prevent unnecessary barking of dogs. 2. The product has a total of 4 gear functions: OFF-used to save battery power and extend battery life. 3. Test-used to check whether the microphone and speaker are functioning normally. 4. Level 1: Detection range of 5 meters 5. Level 2: detection range of 10 meters 6. Level 3: 15m detection range. 7. The product built-in lithium battery, and the detection mode is the switch from OFF to the TEST position. 8. Blow or make a sound into the microphone at a close distance, the ultrasonic transmitter will beep 3 beeps, and the LED light will be on 3 times at the same time. It means that the product is functioning normally

1. Simple and easy, comfortable, easy to carry. 2. It adequately protects devices from the normal scratches, dirt, tear and wear. 3. 360 degrees rotation design makes horizontal viewing more convenient. 4. Access to all ports and buttons easily without removing the case. 5. With good performance and high quality, it may work for a long time

1. Size: 90mm*70mm 2. Built-in high-elastic memory sponge, comfortable and soft 3. Accord with ergonomic design, fit the ear 4. Material: imitation leather

Before Installation Notes 1. Tips 1: Test before installation When testing, do not remove any protective film or tags. Please pay attention to the problem of static electricity. Before attempting any repair, be sure to ground yourself is an ESD (electro static discharge) strap. This will prevent static electricity from damaging the electronic components within the phone. Ensure you wear eye protection and use caution not to cut your finger with the glass splinters. 2. Tips 2: Simulates testing Screen replacement is very fragile product. We strongly suggest test before installation. Please simulates testing, which means mobile phone apart, (motherboard + LCD or screen) connected audio cable and new replacement, power on, test finished. If test OK, please install it. If it can not show, please contact us at the very first time. And please do not force it to be installed in mobile phone. We will not be responsible once the screen is installed. 3. Tips 3: Do not over-bend cable Please make sure LCD cable Do not over-bend. Over 90 degrees bent will cause black display. About the product 1. Replacement LCD display + touch screen digitizer assembly(OLED Material) for Xiaomi Redmi K20 Pro / K20 / Mi 9T / Mi 9T Pro. 2. Replace your broken or unusable item with a new one. 3. Make your device look more refreshing than ever. 4. Completely fit and work. 5. Each item has been checked and in good condition before shipping. 6. Professional installation is highly recommended. We will not be responsible once the screen is installed. 7. Note: supporting fingerprint identification