Strong penetration, dont worry about not receiving the signal With the night light function, the light will not turn on during the day, and the light will turn on automatically at night The product is assembled seamlessly and can be used normally after washing and soaking, and it is not afraid of outdoor sun and rain. Blue light at LED: unique blue LED light design, flashing after ringing. Solid and durable, safe to use Product features: Using of a solar power transmitter, energy saving and durable Receiver plug: EU/US/UK models are available Open space battery life: 200-300M at most 4 adjustable volume levels, 52 different melody styles are available. One transmitter can be paired with multiple receivers. A receiver can also be associated with several transmitters. Receiver Operating voltage: 90-260V Standby current: 10mA Working current: 60 mA Working frequency: 433 MHz With night light function, it will light up at night or when it is dark Transmitter Solar battery: 150Mah lithium polymer battery Work Benchmark: 5.5V 25mA 0.13W Working current: 12mA Use the light to remind you to press the button for 0.5 second response White color Shipping quantity: 1 piece