Camera Monitor Peephole Viewer Doorbell YOKKAO Security Surveillance (Type 2) INDOOR MONITORS INTERCOM - You can see, hear and speak with the visitor who stands at your door. You will stay away from robbers and other bad persons when strangers ring your doorbell. ( The package included 1.1m(43.31in) power plug and 4m(157.48in) test wiring. If test wiring is not long enough when you use it, you can use network cable to connect it. ) NIGHT VERSION - Advanced infrared-assisted lighting features enable you to identify the visitors even at night and capture images in low-illumination environment. 7 MAIN FEATURES  Digital high resolution LCD screen, hands free intercom, electric unlocking functions, monitor the outside view, indoor monitors intercom, night version, auto turn off. IN DOOR STATION VOLUME AND MUSIC SETTING  All of following 2 kinds of settings should abide by when outdoor station is standby, press monitoring button. 1. Music settings (25 different tinkles of bell): Press music button to enter music selection state. 2. Ring volume settings (3 different levels): Keep pressing music button 5 seconds to enter volume selection state. IMPORTANT NOTES - 1. It is better to keep the distance of the indoor monitor with the outdoor unit more than 3 meters or there will be interference. 2. Please adjust to second button on the left of the microphone if the color is black and white. 3. Please don't connect the power adapter directly with the outdoor unit or it will be burned. The power adapter should connect with the indoor unit.