diff --git a/src/SUMMARY.md b/src/SUMMARY.md
index d7f5dd8..b28cf26 100644
--- a/src/SUMMARY.md
+++ b/src/SUMMARY.md
@@ -15,3 +15,4 @@
   - [Sinara 7210 Clocker](./hw/clocker.md)
   - [Sinara 8452 DSP Stabilizer](./hw/stabilizer.md)
   - [Sinara 9805 RF Power Amplifier Booster](./hw/booster.md)
+  - [Sinara 8451 Thermostat](./hw/thermostat.md)
diff --git a/src/hw/stabilizer.md b/src/hw/stabilizer.md
index f8b93b5..83874a9 100644
--- a/src/hw/stabilizer.md
+++ b/src/hw/stabilizer.md
@@ -2,6 +2,7 @@
 
 * [Wiki](https://github.com/sinara-hw/Stabilizer/wiki)
 * [QUARTIQ Manual](https://quartiq.de/stabilizer/)
+* [Firmware](https://github.com/quartiq/stabilizer)
 
 ## JSON
 
diff --git a/src/hw/thermostat.md b/src/hw/thermostat.md
new file mode 100644
index 0000000..4f53e73
--- /dev/null
+++ b/src/hw/thermostat.md
@@ -0,0 +1,29 @@
+# Sinara 8451 Thermostat
+
+* [Wiki](https://github.com/sinara-hw/Thermostat/wiki)
+* [Firmware](https://git.m-labs.hk/M-Labs/thermostat)
+
+## Setup
+
+```shell
+git clone gitea@git.m-labs.hk:M-Labs/thermostat.git
+cd thermostat
+nix develop
+nix-shell -p gcc-arm-embedded-10 rlwrap
+cargo build --release
+arm-none-eabi-objcopy -O binary target/thumbv7em-none-eabihf/release/thermostat thermostat.bin
+# turn on Thermostat
+rlwrap nc -vv 192.168.1.26 23
+# enter `dfu` command end exit rlwrap
+dfu-util -a 0 -s 0x08000000:leave -D thermostat.bin
+```
+
+Then check that fans are working properly.
+You may also check fan controls via `fan` commands (see the firmware documentation).
+
+## Common problems
+
+### Thermostat doesn't connect or doesn't enter DFU mode
+
+Carefully take out Thermostat from its protective box, unscrewed all screws before. Apply jumper and power on the Thermostat.
+Now it should be in DFU mode.
\ No newline at end of file
diff --git a/src/hw/urukul.md b/src/hw/urukul.md
index 71da8d9..6680a69 100644
--- a/src/hw/urukul.md
+++ b/src/hw/urukul.md
@@ -2,6 +2,7 @@
 
 * [Datasheet](https://m-labs.hk/docs/sinara-datasheets/4410-4412.pdf)
 * [Wiki](https://github.com/sinara-hw/Urukul/wiki)
+* [Firmware](https://github.com/quartiq/urukul)
 
 ## JSON