1.Loud audio output & 3 ranges volume adjustable 2.User can change voice freely by mini sd card copy or download from PC

doorbell for the deaf

Application:

Be used indoor as the reminder  for blind people,spot alarm to remind people.

Features

Adopt passive infrared sensing technologySensing angle 120°,sensing distance maximal 5mSensing head/inductive probe can be rotated 60° at both left and right sides Can change voice content at will  by mini SD card or USB portloud high good quality audio output can adjustSupport USB2.0 protocol to transmit data; can read the data in SD card through the USB cable to connect to computerBuilt-in 2W amplifier circuits to ensure loud and beautiful voiceAuto sleeping circuits designed, can keep long-term standbyBuilt-in automatic charging circuitswith DC5V adaptor power supplyBuilt-in 500mAH lithium battery as standby power supply

 Details

Volume Adjust& Power ON/OFF

 USB Port&mini SD Card Port & External Speaker Cable

Montion Sensor Can Ajust Derection

Lithium Battery

Holder

Newest & loud voice music doorbell ,montion sensor security reminder