Wireless Door bell 688( 32multi-music for choice)
Detailed Product Description
Product name: wireless door bell 688
Advantage:
1) Remote-controled range to30-50 meters
2) 32 multi-music for choice
3) can provide OEM & ODM service
Product details:
1) 32 multi-music for choice
2) Remote-controlled rang 30-50 meters
3) Use 1"AAA" battery for Launchers
4) Use 3"AAA"batteries for Receiver