[New Sensor]: Switchbot Indoor/Outdoor Thermo-Hygrometer

[mjchantler]

Sensor Description

Switchbot Indoor/Outdoor Thermo-Hygrometer

Additional information

https://uk.switch-bot.com/products/switchbot-indoor-outdoor-thermo-hygrometer

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No response

[IanThewlis]

lots of info here. https://smarthomescene.com/guides/how-to-integrate-switchbot-outdoor-thermo-hygrometer-in-esphome/

[capo-at-the-5th-fret]

Here's some data...

Outdoor Temperature/Humidity Sensor
WoSensorTHO (Model W3400010)

Mac Address = c7 6b 04 06 15 5e
Switchbot Firmware = v0.8

Sample data from Bluetooth LE Scanner on Android

a = flags data
b = manufacturer specific data
c = service data

[    a     |                        b                        |           c          ]
[ 02 01 06 | 0f ff 69 09 c7 6b 04 06 15 5e ff 02 03 98 1f 00 | 06 16 3d fd 77 00 64 ] temp = 24.3, humidity = 31%, battery = 100%
[ 02 01 06 | 0f ff 69 09 c7 6b 04 06 15 5e f3 02 09 97 1e 00 | 06 16 3d fd 77 00 e4 ] temp = 23.1, humidity = 30%, battery = 100%
[ 02 01 06 | 0f ff 69 09 c7 6b 04 06 15 5e fe 02 02 98 1f 00 | 06 16 3d fd 77 00 64 ] temp = 24.2, humidity = 31%, battery = 100%
[ 02 01 06 | 0f ff 69 09 c7 6b 04 06 15 5e 15 02 08 99 20 00 | 06 16 3d fd 77 00 64 ] temp = 25.8, humidity = 32%, battery = 100%
[ 02 01 06 | 0f ff 69 09 c7 6b 04 06 15 5e 7b 06 05 05 16 00 | 06 16 3d fd 77 40 64 ] temp = -5.5, humidity = 22%, battery = 100%
[ 02 01 06 | 0f ff 69 09 c7 6b 04 06 15 5e 7c 06 01 06 16 00 | 06 16 3d fd 77 40 64 ] temp = -6.1, humidity = 22%, battery = 100%

First sample:

section a = [ 02 01 06 ]
        a[0] - 02 = length
        a[1] - 01 = flags type
        a[2] - 06 = LE general discoverable, BR/EDR not supported

section b = [ 0f ff 69 09 c7 6b 04 06 15 5e ff 02 03 98 1f 00 ]
        b[0] - 0f = length
        b[1] - ff = manufacturer specific type
        b[2] - 69 = manufacturer id (lo byte)
        b[3] - 09 = manufacturer id (hi byte)
        b[4..9] - c7 6b 04 06 15 5e = mac address
        b[10] - ff = unknown byte
        b[11] - 02 = unknown byte
        b[12] - 03 = xxxxbbbb bits, where x are unknown bits, bbbb = decimal part of temperature, in tenths of a celcius degree
        b[13] - 98 = abbbbbbb bits, where a is 1 if temp is +, a is 0 if temp is -, bbbbbbb = 'whole' part of temperature, in celcius
        b[14] - 1f = xbbbbbbb bits, where x is unknown bit, bbbbbbb = humidity in %
        b[15] - 00 = unknown byte

a) manufacturer id = 0x0969 = Woan Technology (Shenzhen) Co., Ltd.
b) temperature = ((b[13] & 0x7f) + ((b[12] & 0x0f) * 0.1)) * ((b[13] & 0x80 > 0) ? 1 : -1) (deg C)
c) humidity = b[14] & 0x7f (%)

section c = [ 06 16 3d fd 77 00 64 ]
        c[0] - 06 = length
        c[1] - 16 = service data type
        c[2] - 3d = uuid (lo byte)
        c[3] - fd = uuid (hi byte)
        c[4] - 77 = unknown byte
        c[5] - 00 = unknown byte
        c[6] - 64 = xbbbbbbbb bits, where x = unknown bit, bbbbbbb = battery level in %

d) uuid = 0xfd3d
e) battery = c[6] & 0x7f (%)