diff --git a/_zigbee/Sonoff_TRVZB.md b/_zigbee/Sonoff_TRVZB.md
index efb811da..4ad75444 100644
--- a/_zigbee/Sonoff_TRVZB.md
+++ b/_zigbee/Sonoff_TRVZB.md
@@ -11,5 +11,6 @@ mlink:
 link: https://itead.cc/product/sonoff-zigbee-thermostatic-radiator-valve/
 link2: https://www.amazon.de/gp/product/B0CH19QPJN
 link3: https://www.aliexpress.com/item/1005006289055397.html
+link4: https://www.banggood.com/SONOFF-TRVZB-Smart-Zigbe-Thermostatic-Radiator-Valve-Intelligent-Thermostat-Temperature-Controller-APPandVoice-Control-Work-with-Alexa-Google-Home-p-2004337.html
 ---