New long-distance wireless intercom doorbell, suitable for home, voice call, loud voice, intercom call unit: equipped with 3 doorbell system units, you can switch between incoming call and intercom mode. Great work: The voice intercom transmission distance can reach 1000m in the open air, and can reach 20-50m through the wall, which is very convenient. Indicator light: The voice intercom equipment is humanized, designed with an intercom indicator light and a power indicator light, which is clear to the user at a glance. Intercom function: Both devices can be used as intercoms for two-way calls without shouting at home. Long battery life: The two-way voice intercom has a built-in large-capacity battery, an intelligent power-saving chip, and a long battery life. 1. The measured call distance is 1000 meters from the 1st floor to the 8th floor. 2. The appearance is slim and the thickness is only 18mm. Similar products on the market are more than 22mm thick and feel good. 3. The battery is a 2000mAh lithium battery. Both the outdoor unit and the indoor unit are equipped with a real 2000mAh battery. The outdoor unit can be pressed 5 times a day, each time it rings for 2 minutes. The working time is about 8 months. The indoor unit operates normally. 4. The button adopts plastic + silicone structure, and the surface adopts high-gloss UV process, which has a good feel. Compared with similar products, it uses full rubber buttons, which have poor quality and feel. 5. Intelligent and humanized design, with intercom light and power light display, customers can see at a glance. 6. The two indoor units can switch between talk mode and intercom mode and use them as intercoms! 7. There are 2 charging methods for external devices, no need to remove the waterproof cover for DC charging and charging on the charging stand. 8. Power button - Position 0 - means turning off the power. Position A - Position B - Frequency B If interference is detected during the call, the outdoor unit and indoor unit will switch to position A or B at the same time 9. There are 2 intercom modes between the two indoor units. 1. In the default mode, press the intercom key of one intercom, the other intercom rings, and then press and hold the TALK key to start the intercom call. 2. In the second mode, you don't need to press the intercom call button, just press and hold the TALK button to talk. Switch between the two modes: Press and hold the intercom button for 5 seconds and hear 3 beeps. 1. Long-distance intercom: The long-distance call distance supports about 1000 meters without obstacles, no network or wires are required, and it is easy to use. 2. High performance: The intelligent intercom chip has strong penetration, and it can be used normally even if the doorbell is on the 1st floor and the repeater is on the 8th floor. 3. Humanized design: Humanized design, equipped with intercom and light display, convenient surface pattern for fast communication operation. 4. Ultra-long standby: Built-in 2000mAh battery, long battery life, press 5 times a day, talk for 2 minutes, can work for about 6 months, and the indoor unit works for about 1 week. 5. Wide application: IP54 waterproof outdoor bell level, small size, will not take up too much wall space, can be used in homes, hotels, villas, factories, hospitals. Product Type: Wireless Intercom Doorbell Material: ABS Outdoor Doorbell: Battery Type: 2000mAh Rechargeable Lithium Battery x 2 (Built-in) Working Temperature: -20~55C Wireless Distance: 1000m/3280ft (Unobstructed)/20-50m 65-164ft (Locked) Wireless Frequency: 410~490MHz Working Time: More than 8 Months Waterproof Grade: IP54 Product Size: Approx. 121.5x61.5x313.mm/4.78x2.42x12.32inch Indoor Doorbell: Battery Type: 2000mAh Rechargeable Lithium Battery x 2 (Built-in) Working Temperature: -20~55C Wireless Distance: 10000m (Locked) Wireless Frequency: 410~490 MHz Working Time: About One Week Product Size: Approx. 115 x 55 x 20mm/4.53 x 2.17 x 0.79in 1 x Outdoor unit 1 x Indoor unit 1 x Charging stand 1 x USB cable 1 x Screwdriver 1 x Sticker 1 x User manual