$290
Programmable 433 MHz 100m musical utility wireless doorbell
| Model Number | IC503 |
| Receiver size | 170x52x30mm |
| Receiver Battery | 2x1.5V AA |
| Transmitter size | 99x32x28mm |
| Transmitter Battery | 1x3V CR2032 |
| Weight | 0.16kgs |
| Transmission Frequency | 433 MHz |
| Transmission Distance | 100m(open area) |
| Function | Self learning |
| Mode | LED flash/melody/silence |
| Tone | melody |
| melody quantity | 16 |
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