diff --git a/bellows/__init__.py b/bellows/__init__.py
index 62768259..085b76d9 100644
--- a/bellows/__init__.py
+++ b/bellows/__init__.py
@@ -1,5 +1,5 @@
 MAJOR_VERSION = 0
 MINOR_VERSION = 35
-PATCH_VERSION = "3"
+PATCH_VERSION = "4"
 __short_version__ = f"{MAJOR_VERSION}.{MINOR_VERSION}"
 __version__ = f"{__short_version__}.{PATCH_VERSION}"
diff --git a/bellows/ezsp/config.py b/bellows/ezsp/config.py
index 992f0ee3..19ba2f29 100644
--- a/bellows/ezsp/config.py
+++ b/bellows/ezsp/config.py
@@ -14,16 +14,7 @@ class RuntimeConfig:
     minimum: bool = False
 
 
-DEFAULT_CONFIG = [
-    RuntimeConfig(
-        config_id=types_v4.EzspConfigId.CONFIG_SOURCE_ROUTE_TABLE_SIZE,
-        value=200,
-        minimum=True,
-    ),
-    RuntimeConfig(
-        config_id=types_v4.EzspConfigId.CONFIG_END_DEVICE_POLL_TIMEOUT,
-        value=8,
-    ),
+DEFAULT_CONFIG_COMMON = [
     RuntimeConfig(
         config_id=types_v4.EzspConfigId.CONFIG_INDIRECT_TRANSMISSION_TIMEOUT,
         value=7680,
@@ -56,14 +47,20 @@ class RuntimeConfig:
         value=16,
         minimum=True,
     ),
-    RuntimeConfig(
-        config_id=types_v6.EzspConfigId.CONFIG_TC_REJOINS_USING_WELL_KNOWN_KEY_TIMEOUT_S,
-        value=90,
-    ),
     RuntimeConfig(
         config_id=types_v4.EzspConfigId.CONFIG_PAN_ID_CONFLICT_REPORT_THRESHOLD,
         value=2,
     ),
+    RuntimeConfig(
+        config_id=types_v4.EzspConfigId.CONFIG_KEY_TABLE_SIZE,
+        value=4,
+        minimum=True,
+    ),
+    RuntimeConfig(
+        config_id=types_v4.EzspConfigId.CONFIG_MAX_END_DEVICE_CHILDREN,
+        value=32,
+        minimum=True,
+    ),
     RuntimeConfig(
         config_id=types_v4.EzspConfigId.CONFIG_APPLICATION_ZDO_FLAGS,
         value=(
@@ -74,3 +71,49 @@ class RuntimeConfig:
     # Must be set last
     RuntimeConfig(types_v4.EzspConfigId.CONFIG_PACKET_BUFFER_COUNT, value=0xFF),
 ]
+
+DEFAULT_CONFIG_LEGACY = [
+    RuntimeConfig(
+        config_id=types_v4.EzspConfigId.CONFIG_SOURCE_ROUTE_TABLE_SIZE,
+        value=16,
+        minimum=True,
+    ),
+    RuntimeConfig(
+        config_id=types_v4.EzspConfigId.CONFIG_END_DEVICE_POLL_TIMEOUT,
+        value=60,
+    ),
+    RuntimeConfig(
+        config_id=types_v4.EzspConfigId.CONFIG_END_DEVICE_POLL_TIMEOUT_SHIFT,
+        value=8,
+    ),
+] + DEFAULT_CONFIG_COMMON
+
+
+DEFAULT_CONFIG_NEW = [
+    RuntimeConfig(
+        config_id=types_v6.EzspConfigId.CONFIG_SOURCE_ROUTE_TABLE_SIZE,
+        value=200,
+        minimum=True,
+    ),
+    RuntimeConfig(
+        config_id=types_v6.EzspConfigId.CONFIG_END_DEVICE_POLL_TIMEOUT,
+        value=8,
+    ),
+    RuntimeConfig(
+        config_id=(
+            types_v6.EzspConfigId.CONFIG_TC_REJOINS_USING_WELL_KNOWN_KEY_TIMEOUT_S
+        ),
+        value=90,
+    ),
+] + DEFAULT_CONFIG_COMMON
+
+
+DEFAULT_CONFIG = {
+    4: DEFAULT_CONFIG_LEGACY,
+    5: DEFAULT_CONFIG_LEGACY,
+    6: DEFAULT_CONFIG_LEGACY,
+    7: DEFAULT_CONFIG_NEW,
+    8: DEFAULT_CONFIG_NEW,
+    9: DEFAULT_CONFIG_NEW,
+    10: DEFAULT_CONFIG_NEW,
+}
diff --git a/bellows/ezsp/protocol.py b/bellows/ezsp/protocol.py
index 24644f6e..20360731 100644
--- a/bellows/ezsp/protocol.py
+++ b/bellows/ezsp/protocol.py
@@ -71,15 +71,11 @@ async def initialize(self, zigpy_config: Dict) -> None:
         # Not all config will be present in every EZSP version so only use valid keys
         ezsp_config = {}
 
-        for cfg in DEFAULT_CONFIG:
-            try:
-                config_id = self.types.EzspConfigId[cfg.config_id.name]
-            except KeyError:
-                pass
-            else:
-                ezsp_config[cfg.config_id.name] = dataclasses.replace(
-                    cfg, config_id=config_id
-                )
+        for cfg in DEFAULT_CONFIG[self.EZSP_VERSION]:
+            config_id = self.types.EzspConfigId[cfg.config_id.name]
+            ezsp_config[cfg.config_id.name] = dataclasses.replace(
+                cfg, config_id=config_id
+            )
 
         # Override the defaults with user-specified values (or `None` for deletions)
         for name, value in self.SCHEMAS[CONF_EZSP_CONFIG](
diff --git a/tests/test_ezsp_protocol.py b/tests/test_ezsp_protocol.py
index 6535324e..2d353ac9 100644
--- a/tests/test_ezsp_protocol.py
+++ b/tests/test_ezsp_protocol.py
@@ -6,7 +6,7 @@
 import bellows.ezsp.v4
 import bellows.ezsp.v4.types as t
 
-from .async_mock import ANY, AsyncMock, MagicMock, patch
+from .async_mock import ANY, AsyncMock, MagicMock, call, patch
 
 
 class _DummyProtocolHandler(bellows.ezsp.v4.EZSPv4):
@@ -93,6 +93,40 @@ async def test_cfg_initialize(prot_hndl, caplog):
             assert "Couldn't set" in caplog.text
 
 
+async def test_config_initialize_husbzb1(prot_hndl):
+    """Test timeouts are properly set for HUSBZB-1."""
+
+    prot_hndl.getConfigurationValue = AsyncMock(return_value=(t.EzspStatus.SUCCESS, 0))
+    prot_hndl.setConfigurationValue = AsyncMock(return_value=(t.EzspStatus.SUCCESS,))
+
+    await prot_hndl.initialize({"ezsp_config": {}})
+    prot_hndl.setConfigurationValue.assert_has_calls(
+        [
+            call(t.EzspConfigId.CONFIG_SOURCE_ROUTE_TABLE_SIZE, 16),
+            call(t.EzspConfigId.CONFIG_END_DEVICE_POLL_TIMEOUT, 60),
+            call(t.EzspConfigId.CONFIG_END_DEVICE_POLL_TIMEOUT_SHIFT, 8),
+            call(t.EzspConfigId.CONFIG_INDIRECT_TRANSMISSION_TIMEOUT, 7680),
+            call(t.EzspConfigId.CONFIG_STACK_PROFILE, 2),
+            call(t.EzspConfigId.CONFIG_SUPPORTED_NETWORKS, 1),
+            call(t.EzspConfigId.CONFIG_MULTICAST_TABLE_SIZE, 16),
+            call(t.EzspConfigId.CONFIG_TRUST_CENTER_ADDRESS_CACHE_SIZE, 2),
+            call(t.EzspConfigId.CONFIG_SECURITY_LEVEL, 5),
+            call(t.EzspConfigId.CONFIG_ADDRESS_TABLE_SIZE, 16),
+            call(t.EzspConfigId.CONFIG_PAN_ID_CONFLICT_REPORT_THRESHOLD, 2),
+            call(t.EzspConfigId.CONFIG_KEY_TABLE_SIZE, 4),
+            call(t.EzspConfigId.CONFIG_MAX_END_DEVICE_CHILDREN, 32),
+            call(
+                t.EzspConfigId.CONFIG_APPLICATION_ZDO_FLAGS,
+                (
+                    t.EmberZdoConfigurationFlags.APP_HANDLES_UNSUPPORTED_ZDO_REQUESTS
+                    | t.EmberZdoConfigurationFlags.APP_RECEIVES_SUPPORTED_ZDO_REQUESTS
+                ),
+            ),
+            call(t.EzspConfigId.CONFIG_PACKET_BUFFER_COUNT, 255),
+        ]
+    )
+
+
 async def test_cfg_initialize_skip(prot_hndl):
     """Test initialization."""