diff --git a/zhaquirks/sonoff/trvzb.py b/zhaquirks/sonoff/trvzb.py
new file mode 100644
index 0000000000..8f02ee3b72
--- /dev/null
+++ b/zhaquirks/sonoff/trvzb.py
@@ -0,0 +1,99 @@
+"""Sonoff TRVZB - Zigbee Thermostatic Radiator Valve."""
+
+from zigpy.quirks import CustomCluster
+from zigpy.quirks.v2 import QuirkBuilder
+from zigpy.quirks.v2.homeassistant import UnitOfTemperature
+import zigpy.types as t
+from zigpy.zcl.foundation import BaseAttributeDefs, ZCLAttributeDef
+
+
+class CustomSonoffCluster(CustomCluster):
+    """Custom Sonoff cluster."""
+
+    cluster_id = 0xFC11
+
+    class AttributeDefs(BaseAttributeDefs):
+        """Attribute definitions."""
+
+        child_lock = ZCLAttributeDef(
+            id=0x0000,
+            type=t.Bool,
+        )
+
+        open_window = ZCLAttributeDef(
+            id=0x6000,
+            type=t.Bool,
+        )
+
+        frost_protection_temperature = ZCLAttributeDef(
+            id=0x6002,
+            type=t.int16s,
+        )
+
+        idle_steps = ZCLAttributeDef(
+            id=0x6003,
+            type=t.uint16_t,
+            access="r",
+        )
+
+        closing_steps = ZCLAttributeDef(
+            id=0x6004,
+            type=t.uint16_t,
+            access="r",
+        )
+
+        valve_opening_limit_voltage = ZCLAttributeDef(
+            id=0x6005,
+            type=t.uint16_t,
+            access="r",
+        )
+
+        valve_closing_limit_voltage = ZCLAttributeDef(
+            id=0x6006,
+            type=t.uint16_t,
+            access="r",
+        )
+
+        valve_motor_running_voltage = ZCLAttributeDef(
+            id=0x6007,
+            type=t.uint16_t,
+            access="r",
+        )
+
+        valve_opening_degree = ZCLAttributeDef(
+            id=0x600B,
+            type=t.uint8_t,
+        )
+
+        valve_closing_degree = ZCLAttributeDef(
+            id=0x600C,
+            type=t.uint8_t,
+        )
+
+    @property
+    def _is_manuf_specific(self):
+        return False
+
+
+(
+    QuirkBuilder("SONOFF", "TRVZB")
+    .replaces(CustomSonoffCluster)
+    .switch(
+        CustomSonoffCluster.AttributeDefs.child_lock.name,
+        CustomSonoffCluster.cluster_id,
+    )
+    .switch(
+        CustomSonoffCluster.AttributeDefs.open_window.name,
+        CustomSonoffCluster.cluster_id,
+    )
+    .number(
+        CustomSonoffCluster.AttributeDefs.frost_protection_temperature.name,
+        CustomSonoffCluster.cluster_id,
+        min_value=4.0,
+        max_value=35.0,
+        step=0.5,
+        unit=UnitOfTemperature.CELSIUS,
+        multiplier=0.01,
+    )
+    .add_to_registry()
+)