1?��The touch screen lock uses the digital touch screen to enter the password, contains two sets of passwords: user password and management password, more convenitn to use. 2?��With password confusion function,you can enter a string of random numbers before or after the correct password to prevent others from peeking. 3?��When you enter the wrong password, the red LED lights 4 times and the buzzer sounds 4 times; if you continue to enter the wrong password 5 times, the screen will be locked for 5 minutes. 4?��The low power alarm function reminds you to replace the battery(not included) in time, and it can be unlocked about 200 times after the alarm, so you don't have to worry about running out of power. 5?��The USB interface under the key panel can be used as an emergency power source for charging. 6?��Suitable for schools, SPA/sauna bath centers, swimming pools, gyms, golf courses, supermarkets, hotels, companies, factories, homes, business establishments, etc. 7?��Made of premium zinc alloy material, safe and durable, firm and beautiful.