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What are we Reverse Engineering?

Inkbird ITH-20R provides direct and accurate display of humidity and temperature.You can choose Fahrenheit or Celsius according to your personal preference.

Specs

SpecValue
MakeInkbird
ModelITH-20R
User Manualhttps://pmod79883-pic31.websiteonline.cn/upload/ITH-2011.pdf
Sampling Period10s

Transmission Frequency

433MHz
Transmission Distance≈300 Feet

Building RTL-433 on Mac


Clone repository

> git clone https://github.com/merbanan/rtl_433.git

Install rtl-sdr and cmake using brew

> brew install rtl-sdr cmake

Build

cd rtl_433/
mkdir build
cd build
cmake ..
make
make install

For more details see: https://github.com/merbanan/rtl_433/blob/master/docs/BUILDING.md

Running RTL_433

> rtl_433 -v

rtl_433 version 19.08-18-g8eecdbb branch master at 201909241811 inputs file rtl_tcp RTL-SDR
Use -h for usage help and see https://triq.org/ for documentation.
Trying conf file at "rtl_433.conf"...
Trying conf file at "/Users/john.mehan/.config/rtl_433/rtl_433.conf"...
Trying conf file at "/usr/local/etc/rtl_433/rtl_433.conf"...
Trying conf file at "/etc/rtl_433/rtl_433.conf"...

	Consider using "-M newmodel" to transition to new model keys. This will become the default someday.
	A table of changes and discussion is at https://github.com/merbanan/rtl_433/pull/986.

Registering protocol [1] "Silvercrest Remote Control"
Registering protocol [2] "Rubicson Temperature Sensor"
Registering protocol [3] "Prologue Temperature Sensor"
Registering protocol [4] "Waveman Switch Transmitter"
Registering protocol [8] "LaCrosse TX Temperature / Humidity Sensor"
Registering protocol [11] "Acurite 609TXC Temperature and Humidity Sensor"
Registering protocol [12] "Oregon Scientific Weather Sensor"
Registering protocol [15] "KlikAanKlikUit Wireless Switch"
Registering protocol [16] "AlectoV1 Weather Sensor (Alecto WS3500 WS4500 Ventus W155/W044 Oregon)"
Registering protocol [17] "Cardin S466-TX2"
Registering protocol [18] "Fine Offset Electronics, WH2, WH5, Telldus Temperature/Humidity/Rain Sensor"
Registering protocol [19] "Nexus Temperature & Humidity Sensor"
Registering protocol [20] "Ambient Weather Temperature Sensor"
Registering protocol [21] "Calibeur RF-104 Sensor"
Registering protocol [23] "DSC Security Contact"
Registering protocol [25] "Globaltronics GT-WT-02 Sensor"
Registering protocol [26] "Danfoss CFR Thermostat"
Registering protocol [29] "Chuango Security Technology"
Registering protocol [30] "Generic Remote SC226x EV1527"
Registering protocol [31] "TFA-Twin-Plus-30.3049, Conrad KW9010, Ea2 BL999"
Registering protocol [32] "Fine Offset Electronics WH1080/WH3080 Weather Station"
Registering protocol [33] "WT450, WT260H, WT405H"
Registering protocol [34] "LaCrosse WS-2310 / WS-3600 Weather Station"
Registering protocol [35] "Esperanza EWS"
Registering protocol [36] "Efergy e2 classic"
Registering protocol [38] "Generic temperature sensor 1"
Registering protocol [39] "WG-PB12V1 Temperature Sensor"
Registering protocol [40] "Acurite 592TXR Temp/Humidity, 5n1 Weather Station, 6045 Lightning"
Registering protocol [41] "Acurite 986 Refrigerator / Freezer Thermometer"
Registering protocol [42] "HIDEKI TS04 Temperature, Humidity, Wind and Rain Sensor"
Registering protocol [43] "Watchman Sonic / Apollo Ultrasonic / Beckett Rocket oil tank monitor"
Registering protocol [44] "CurrentCost Current Sensor"
Registering protocol [45] "emonTx OpenEnergyMonitor"
Registering protocol [46] "HT680 Remote control"
Registering protocol [47] "Conrad S3318P Temperature & Humidity Sensor"
Registering protocol [48] "Akhan 100F14 remote keyless entry"
Registering protocol [49] "Quhwa"
Registering protocol [50] "OSv1 Temperature Sensor"
Registering protocol [51] "Proove / Nexa / KlikAanKlikUit Wireless Switch"
Registering protocol [52] "Bresser Thermo-/Hygro-Sensor 3CH"
Registering protocol [53] "Springfield Temperature and Soil Moisture"
Registering protocol [54] "Oregon Scientific SL109H Remote Thermal Hygro Sensor"
Registering protocol [55] "Acurite 606TX Temperature Sensor"
Registering protocol [56] "TFA pool temperature sensor"
Registering protocol [57] "Kedsum Temperature & Humidity Sensor, Pearl NC-7415"
Registering protocol [58] "Blyss DC5-UK-WH"
Registering protocol [59] "Steelmate TPMS"
Registering protocol [60] "Schrader TPMS"
Registering protocol [63] "Efergy Optical"
Registering protocol [67] "Radiohead ASK"
Registering protocol [68] "Kerui PIR / Contact Sensor"
Registering protocol [69] "Fine Offset WH1050 Weather Station"
Registering protocol [70] "Honeywell Door/Window Sensor"
Registering protocol [71] "Maverick ET-732/733 BBQ Sensor"
Registering protocol [73] "LaCrosse TX141-Bv2, TX141TH-Bv2, TX141-Bv3 sensor"
Registering protocol [74] "Acurite 00275rm,00276rm Temp/Humidity with optional probe"
Registering protocol [75] "LaCrosse TX35DTH-IT, TFA Dostmann 30.3155 Temperature/Humidity sensor"
Registering protocol [76] "LaCrosse TX29IT Temperature sensor"
Registering protocol [77] "Vaillant calorMatic VRT340f Central Heating Control"
Registering protocol [78] "Fine Offset Electronics, WH25, WH32B, WH24, WH65B, HP1000 Temperature/Humidity/Pressure Sensor"
Registering protocol [79] "Fine Offset Electronics, WH0530 Temperature/Rain Sensor"
Registering protocol [80] "IBIS beacon"
Registering protocol [81] "Oil Ultrasonic STANDARD FSK"
Registering protocol [82] "Citroen TPMS"
Registering protocol [83] "Oil Ultrasonic STANDARD ASK"
Registering protocol [84] "Thermopro TP11 Thermometer"
Registering protocol [85] "Solight TE44"
Registering protocol [86] "Wireless Smoke and Heat Detector GS 558"
Registering protocol [87] "Generic wireless motion sensor"
Registering protocol [88] "Toyota TPMS"
Registering protocol [89] "Ford TPMS"
Registering protocol [90] "Renault TPMS"
Registering protocol [91] "inFactory"
Registering protocol [92] "FT-004-B Temperature Sensor"
Registering protocol [93] "Ford Car Key"
Registering protocol [94] "Philips outdoor temperature sensor (type AJ3650)"
Registering protocol [95] "Schrader TPMS EG53MA4, PA66GF35"
Registering protocol [96] "Nexa"
Registering protocol [97] "Thermopro TP08/TP12/TP20 thermometer"
Registering protocol [98] "GE Color Effects"
Registering protocol [99] "X10 Security"
Registering protocol [100] "Interlogix GE UTC Security Devices"
Registering protocol [102] "SimpliSafe Home Security System (May require disabling automatic gain for KeyPad decodes)"
Registering protocol [103] "Sensible Living Mini-Plant Moisture Sensor"
Registering protocol [108] "Hyundai WS SENZOR Remote Temperature Sensor"
Registering protocol [109] "WT0124 Pool Thermometer"
Registering protocol [110] "PMV-107J (Toyota) TPMS"
Registering protocol [111] "Emos TTX201 Temperature Sensor"
Registering protocol [112] "Ambient Weather TX-8300 Temperature/Humidity Sensor"
Registering protocol [113] "Ambient Weather WH31E Thermo-Hygrometer Sensor"
Registering protocol [114] "Maverick et73"
Registering protocol [115] "Honeywell ActivLink, Wireless Doorbell"
Registering protocol [116] "Honeywell ActivLink, Wireless Doorbell (FSK)"
Registering protocol [119] "Bresser Weather Center 5-in-1"
Registering protocol [121] "Opus/Imagintronix XT300 Soil Moisture"
Registering protocol [124] "LaCrosse/ELV/Conrad WS7000/WS2500 weather sensors"
Registering protocol [125] "TS-FT002 Wireless Ultrasonic Tank Liquid Level Meter With Temperature Sensor"
Registering protocol [126] "Companion WTR001 Temperature Sensor"
Registering protocol [127] "Ecowitt Wireless Outdoor Thermometer WH53/WH0280/WH0281A"
Registering protocol [128] "DirecTV RC66RX Remote Control"
Registering protocol [131] "Microchip HCS200 KeeLoq Hopping Encoder based remotes"
Registering protocol [132] "TFA Dostmann 30.3196 T/H outdoor sensor"
Registering protocol [133] "Rubicson 48659 Thermometer"
Registering protocol [134] "Holman Industries WS5029 weather station"
Registering protocol [135] "Philips outdoor temperature sensor (type AJ7010)"
Registering protocol [136] "ESIC EMT7110 power meter"
Registering protocol [137] "Globaltronics QUIGG GT-TMBBQ-05"
Registering protocol [138] "Globaltronics GT-WT-03 Sensor"
Registered 108 out of 138 device decoding protocols
Found 1 device(s)

trying device  0:  Realtek, RTL2838UHIDIR, SN: 00000001
Found Rafael Micro R820T tuner
Using device 0: Generic RTL2832U OEM
Exact sample rate is: 250000.000414 Hz
[R82XX] PLL not locked!
Sample rate set to 250000 S/s.
Bit detection level set to 0 (Auto).
Tuner gain set to Auto.
Reading samples in async mode...
Tuned to 433.920MHz.

References

ReferenceURL
RTL-SDR: 433.92Mhz ASK/OOK Decoding of Various Devices with rtl_433https://goughlui.com/2013/12/20/rtl-sdr-433-92mhz-askook-decoding-of-various-devices-with-rtl_433/
RTL_433https://github.com/merbanan/rtl_433
Building RTL_433https://github.com/merbanan/rtl_433/blob/master/docs/BUILDING.md
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