2 Pack Intercoms Wireless for Home Voice Bidirectional Caller Home Ultra Long Distance Portable Wireless Voice Interphone Elderly Caller Room to Room Communication Intercom Two Way Ringtone 【Long- Communication】: Our wireless two-way intercom system is designed for long- communication, with a tested of to 300 meters. It can even penetrate walls and floors, allowing for clear communication from 1st to 8th floor. This makes it an ideal solution for elderly care, home or office communication. 【Slim and Sleek Design】: With a thickness of only 18mm, our intercom system is slimmer than similar products on market which are usually over 22mm thick. slim design, combined with a high-gloss UV-treated surface and a + silicone button structure, offers a superior tactile experience. 【Intelligent and User-Friendly】: Our intercom system is designed with user-friendly features, including a talk light and battery light display for easy . It also comes with a charging dock for smart charging, ensuring device is always powered and ready for use. 【High-Capacity Battery】: Powered by a 1800mAh polymer battery, our intercom system can last for about a week with normal use (5 calls per day, 30 seconds per call). It also features a standby time of 3-5 days, making it a reliable communication tool for your home or office. 【Versatile and Adjustable】: Our intercom system offers two frequency options (462MHz and 434MHz) to interference. It also features 38 ringtone options and 3 adjustable volume levels for both ringtones and call volume. Please note that two devices be used together and cannot be used separately.