Sound: 90-100 dB (open space)
Transmission range: 30-40 meters
Frequency: 433.92 MHz
Transmitter power: 2 1.5V (AAA) dry batteries (excluding batteries)
Receiver power: CR2032 button battery (this product already contains 4 CR2032 button batteries)
Product size: 102*45*10mm/4.02*1.77*0.39in
1. Please allow 1-3mm differs due to manual measurement.
2. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding.
1 X Transmitter
4 X Receiver
4 X CR2032 Button Battery
1 X Transmitter Base
4 X Hanging Ring
4 X Double-Sided Stickers
1 X Manual