Sub-1G OOK Wireless Motion Sensor Doorbell -- BC48R2020 / HT66FV130 / HT7M2126

Sub-1G OOK Wireless Motion Sensor Doorbell
BC48R2020 / HT66FV130 / HT7M2126
RF Characteristics
 Frequency : 315MHz
 Modulation : OOK
 Operating voltage
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Remote TX : 3V
PIR TX : 4.5V
Doorbell RX : 5V
HT7M2126
PIR Module
 Standby & Transmission current consumption
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Remote TX : 1A & 10.8mA
PIR TX : 27A & 11.5mA
 RX current consumption : 24mA
 Output power
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BC48R2020
Remote TX : 9.5dBm
PIR TX : 9.5dBm
 RX Receiver sensitivity : -100dBm
 Remote functions : Wireless Doorbell, Visitor chime
HT66FV130
BC48R2020 Flash ROM
BC9821
Application Areas
Block Diagram
BC48R2020
HT7M2126
PIR Module
Key Button
Holtek
8-bit core
HIRC/
Crystal OSC
PA
315MHz
ASK
Modulation
Internal
 32 PLL
Input
capture
Decoder
BC9821 RX
3V
5V
VDD
3.3V
VDDIO
Voice ROM
SPI
RemoteTX & PIR TX
Key Input
HT66FV130
64Bytes
EEPROM
Holtek
8-bit
Core
3V / 8Ω 410mW
5V / 8Ω 1200mW
Power
AMP
SPIA
Application Circuit
PIR TX Circuit
Doorbell RX Circuit
Volume
16-bit
DAC
Doorbell RX
Remote TX Circuit
Music