MEKOTRIN Wireless Intercom Doorbell, 2 Way Wireless Voice Intercom Doorbell 3280FT/1000M Long Distance 3 Gear Adjustable Sound, Rainproof Rechargeable Home Intercom Systems for Elderly Office Hospital

• Long Standby Time : Wireless Intercom Doorbells Kit features 2 doorbell units, each equipped with a 2000mAh battery. With daily use of 5 calls, each lasting 2 minutes, it can last approximately 8 months; the indoor unit lasts about 1 week
• Long-Distance Communication : Barrier free long distance call distance supports about 3280ft/1000m with the wireless intercom system, without the need for Wi-Fi or wiring. Effortlessly converse with visitors outside your home without raising your voice
• User-Friendly Operation : Simply press the bell button on the indoor unit to ring the other. Engage in conversation by pressing the TALK button. Ringtone Volume: 3 gear adjust (standby to adjust the volume key), Call Sound: 3 gear adjust (call working time adjustment volume keys)
• Includes Charging Dock : The Home Intercom Systems for Elderly comes with a convenient charging dock that fully charges the device in just 5 hours, ensuring that you are always connected and ready to communicate without interruptions. Working Frequency: B gear frequency 410MHz, A gear frequency 490MHz.
• Ergonomic Button Design : The intercom system buttons are constructed from durable plastic and silicone, featuring a high-gloss surface treatment. Designed for comfort with an 18mm thickness, it includes visual indicators for talk and power status, allowing for quick operation

Specification: Item type: wireless intercom doorbells. Material: ABS Working temperature: -20 °C to 55 °C. Transmission distance: approximately 1000 metres empty. Operating frequency: B gear frequency 462 MHz, A union frequency 434 MHz