- 🔔【Self-powered technology】Using micro-energy harvesting technology, useless batteries, light buttons, and worry-free battery life.
- 🔔【Ringtone and volume】4-level volume, adjustable at will, the elderly can hear clearly. 38 ringtones, receiver music can be freely selected.
- 🔔【IP67 Waterproof Rating】IP67 rated transmitter design, working temperature: -4℉-131℉, can withstand harsh weather conditions.
- 🔔【Transmission distance】The transmission distance in the open space is 2300in, which can meet the use of various house types.
- 🔔【Service life】Pressing force < 5N, pressing times > 200,000 times.
