[Long Range Communication]: Our wireless two-way intercom system is designed for long-range communication, tested up to 300 meters. It penetrates walls and floors, ensuring clear communication from the 1st to the 8th floor. Ideal for elderly care, home, or office communication. [Slim and Stylish Design]: At only 18mm thick, our intercom is slimmer than similar products (typically over 22mm). The sleek design, with a high-gloss UV finish and plastic + silicone buttons, offers a superior tactile experience. [Intelligent and User-Friendly]: Features include a call light and battery indicator for easy monitoring. A charging dock ensures the device is always powered and ready. [High-Capacity Battery]: Powered by an 1800mAh polymer lithium battery, lasting about a week with normal use (5 calls per day, per call). Standby time is 3-5 days, making it a reliable communication tool. [Versatile and Adjustable]: Offers two frequency options (462MHz and 434MHz) to avoid interference. Includes 38 ringtone options and 3 adjustable volume levels for both ringtones and call volume. Note: The two units must be used together and cannot be used separately. Power supply: polymer lithium battery 1800mAh Battery powered: DC5V/1A Working temperature: -20 C to 55 C Transmission distance: Approximately 1000 meters open space, 20-100 meters partitions, floors 1-8 Working frequency: B-shift frequency 462MHz A-shift frequency 434MHz Working time: Charge once for about 1 week Charging time: About 5 hours when fully charged Standby time: 3-5 days Sound adjustment: 3rd gear adjustable Music ringtones: 38 ringtones Ringtone volume: Level 3 adjustment (volume adjustment key for standby machine) Call sound: Level 3 adjust call size (adjust the volume button during a call) Color: White Silver Material: Plastic Package contents: 2x Home intercom finder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real one. The allowable measurement error is +/- 1-3cm.