diff --git a/README.md b/README.md
index 2dfde360..fcc28190 100644
--- a/README.md
+++ b/README.md
@@ -180,7 +180,7 @@ The following devices have been tested and confirmed as working. If your device
- **Plugs**: EP10, EP25\*, HS100\*\*, HS103, HS105, HS110, KP100, KP105, KP115, KP125, KP125M\*, KP401
- **Power Strips**: EP40, HS107, HS300, KP200, KP303, KP400
-- **Wall Switches**: ES20M, HS200, HS210, HS220, KP405, KS200M, KS205\*, KS220M, KS225\*, KS230, KS240\*
+- **Wall Switches**: ES20M, HS200, HS210, HS220\*\*, KP405, KS200M, KS205\*, KS220M, KS225\*, KS230, KS240\*
- **Bulbs**: KL110, KL120, KL125, KL130, KL135, KL50, KL60, LB110
- **Light Strips**: KL400L5, KL420L5, KL430
- **Hubs**: KH100\*
diff --git a/SUPPORTED.md b/SUPPORTED.md
index e2db7bc7..40330d0a 100644
--- a/SUPPORTED.md
+++ b/SUPPORTED.md
@@ -79,6 +79,7 @@ Some newer Kasa devices require authentication. These are marked with *\*
- **KP405**
- Hardware: 1.0 (US) / Firmware: 1.0.5
- **KS200M**
diff --git a/kasa/tests/device_fixtures.py b/kasa/tests/device_fixtures.py
index 0d6fbd48..1eb3e829 100644
--- a/kasa/tests/device_fixtures.py
+++ b/kasa/tests/device_fixtures.py
@@ -110,7 +110,7 @@ STRIPS_SMART = {"P300", "TP25"}
STRIPS = {*STRIPS_IOT, *STRIPS_SMART}
DIMMERS_IOT = {"ES20M", "HS220", "KS220M", "KS230", "KP405"}
-DIMMERS_SMART = {"KS225", "S500D", "P135"}
+DIMMERS_SMART = {"HS220", "KS225", "S500D", "P135"}
DIMMERS = {
*DIMMERS_IOT,
*DIMMERS_SMART,
diff --git a/kasa/tests/fixtures/smart/HS220(US)_3.26_1.0.1.json b/kasa/tests/fixtures/smart/HS220(US)_3.26_1.0.1.json
new file mode 100644
index 00000000..63ec680b
--- /dev/null
+++ b/kasa/tests/fixtures/smart/HS220(US)_3.26_1.0.1.json
@@ -0,0 +1,371 @@
+{
+ "component_nego": {
+ "component_list": [
+ {
+ "id": "device",
+ "ver_code": 2
+ },
+ {
+ "id": "firmware",
+ "ver_code": 2
+ },
+ {
+ "id": "quick_setup",
+ "ver_code": 3
+ },
+ {
+ "id": "inherit",
+ "ver_code": 1
+ },
+ {
+ "id": "time",
+ "ver_code": 1
+ },
+ {
+ "id": "wireless",
+ "ver_code": 1
+ },
+ {
+ "id": "schedule",
+ "ver_code": 2
+ },
+ {
+ "id": "countdown",
+ "ver_code": 2
+ },
+ {
+ "id": "antitheft",
+ "ver_code": 1
+ },
+ {
+ "id": "account",
+ "ver_code": 1
+ },
+ {
+ "id": "synchronize",
+ "ver_code": 1
+ },
+ {
+ "id": "sunrise_sunset",
+ "ver_code": 1
+ },
+ {
+ "id": "led",
+ "ver_code": 3
+ },
+ {
+ "id": "cloud_connect",
+ "ver_code": 1
+ },
+ {
+ "id": "iot_cloud",
+ "ver_code": 1
+ },
+ {
+ "id": "device_local_time",
+ "ver_code": 1
+ },
+ {
+ "id": "default_states",
+ "ver_code": 1
+ },
+ {
+ "id": "brightness",
+ "ver_code": 1
+ },
+ {
+ "id": "preset",
+ "ver_code": 1
+ },
+ {
+ "id": "on_off_gradually",
+ "ver_code": 2
+ },
+ {
+ "id": "dimmer_calibration",
+ "ver_code": 1
+ },
+ {
+ "id": "overheat_protection",
+ "ver_code": 1
+ },
+ {
+ "id": "smart_switch",
+ "ver_code": 1
+ },
+ {
+ "id": "dimmer_custom_action",
+ "ver_code": 1
+ }
+ ]
+ },
+ "discovery_result": {
+ "device_id": "00000000000000000000000000000000",
+ "owner": "00000000000000000000000000000000",
+ "device_type": "SMART.KASASWITCH",
+ "device_model": "HS220(US)",
+ "ip": "127.0.0.123",
+ "mac": "24-2F-D0-00-00-00",
+ "is_support_iot_cloud": true,
+ "obd_src": "tplink",
+ "factory_default": false,
+ "mgt_encrypt_schm": {
+ "is_support_https": false,
+ "encrypt_type": "AES",
+ "http_port": 80,
+ "lv": 2
+ }
+ },
+ "get_antitheft_rules": {
+ "antitheft_rule_max_count": 1,
+ "enable": false,
+ "rule_list": []
+ },
+ "get_auto_update_info": {
+ "enable": true,
+ "random_range": 120,
+ "time": 180
+ },
+ "get_connect_cloud_state": {
+ "status": 0
+ },
+ "get_countdown_rules": {
+ "countdown_rule_max_count": 1,
+ "enable": false,
+ "rule_list": []
+ },
+ "get_device_info": {
+ "avatar": "table_lamp_5",
+ "brightness": 51,
+ "default_states": {
+ "re_power_type": "always_off",
+ "re_power_type_capability": [
+ "last_states",
+ "always_on",
+ "always_off"
+ ],
+ "type": "last_states"
+ },
+ "device_id": "0000000000000000000000000000000000000000",
+ "device_on": false,
+ "fw_id": "00000000000000000000000000000000",
+ "fw_ver": "1.0.1 Build 230829 Rel.160220",
+ "has_set_location_info": true,
+ "hw_id": "00000000000000000000000000000000",
+ "hw_ver": "3.26",
+ "ip": "127.0.0.123",
+ "lang": "en_US",
+ "latitude": 0,
+ "longitude": 0,
+ "mac": "24-2F-D0-00-00-00",
+ "model": "HS220",
+ "nickname": "I01BU0tFRF9OQU1FIw==",
+ "oem_id": "00000000000000000000000000000000",
+ "on_time": 0,
+ "overheat_status": "normal",
+ "region": "America/Detroit",
+ "rssi": -62,
+ "signal_level": 2,
+ "smart_switch_state": false,
+ "specs": "",
+ "ssid": "I01BU0tFRF9TU0lEIw==",
+ "time_diff": -300,
+ "type": "SMART.KASASWITCH"
+ },
+ "get_device_time": {
+ "region": "America/Detroit",
+ "time_diff": -300,
+ "timestamp": 1720201570
+ },
+ "get_device_usage": {
+ "time_usage": {
+ "past30": 30,
+ "past7": 30,
+ "today": 11
+ }
+ },
+ "get_fw_download_state": {
+ "auto_upgrade": false,
+ "download_progress": 0,
+ "reboot_time": 5,
+ "status": 0,
+ "upgrade_time": 5
+ },
+ "get_inherit_info": null,
+ "get_latest_fw": {
+ "fw_size": 0,
+ "fw_ver": "1.0.1 Build 230829 Rel.160220",
+ "hw_id": "",
+ "need_to_upgrade": false,
+ "oem_id": "",
+ "release_date": "",
+ "release_note": "",
+ "type": 0
+ },
+ "get_led_info": {
+ "bri_config": {
+ "bri_type": "overall",
+ "overall_bri": 50
+ },
+ "led_rule": "toggle",
+ "led_status": true,
+ "night_mode": {
+ "end_time": 420,
+ "night_mode_type": "custom",
+ "start_time": 1320
+ }
+ },
+ "get_next_event": {},
+ "get_on_off_gradually_info": {
+ "off_state": {
+ "duration": 1,
+ "enable": true,
+ "max_duration": 60
+ },
+ "on_state": {
+ "duration": 1,
+ "enable": true,
+ "max_duration": 60
+ }
+ },
+ "get_preset_rules": {
+ "brightness": [
+ 100,
+ 75,
+ 50,
+ 25,
+ 1
+ ]
+ },
+ "get_schedule_rules": {
+ "enable": false,
+ "rule_list": [],
+ "schedule_rule_max_count": 32,
+ "start_index": 0,
+ "sum": 0
+ },
+ "get_wireless_scan_info": {
+ "ap_list": [
+ {
+ "bssid": "000000000000",
+ "channel": 0,
+ "cipher_type": 2,
+ "key_type": "wpa2_psk",
+ "signal_level": 3,
+ "ssid": "I01BU0tFRF9TU0lEIw=="
+ },
+ {
+ "bssid": "000000000000",
+ "channel": 0,
+ "cipher_type": 2,
+ "key_type": "wpa2_psk",
+ "signal_level": 3,
+ "ssid": "I01BU0tFRF9TU0lEIw=="
+ },
+ {
+ "bssid": "000000000000",
+ "channel": 0,
+ "cipher_type": 2,
+ "key_type": "wpa2_psk",
+ "signal_level": 3,
+ "ssid": "I01BU0tFRF9TU0lEIw=="
+ },
+ {
+ "bssid": "000000000000",
+ "channel": 0,
+ "cipher_type": 2,
+ "key_type": "wpa2_psk",
+ "signal_level": 2,
+ "ssid": "I01BU0tFRF9TU0lEIw=="
+ },
+ {
+ "bssid": "000000000000",
+ "channel": 0,
+ "cipher_type": 2,
+ "key_type": "wpa2_psk",
+ "signal_level": 2,
+ "ssid": "I01BU0tFRF9TU0lEIw=="
+ },
+ {
+ "bssid": "000000000000",
+ "channel": 0,
+ "cipher_type": 2,
+ "key_type": "wpa2_psk",
+ "signal_level": 2,
+ "ssid": "I01BU0tFRF9TU0lEIw=="
+ },
+ {
+ "bssid": "000000000000",
+ "channel": 0,
+ "cipher_type": 2,
+ "key_type": "wpa2_psk",
+ "signal_level": 1,
+ "ssid": "I01BU0tFRF9TU0lEIw=="
+ },
+ {
+ "bssid": "000000000000",
+ "channel": 0,
+ "cipher_type": 2,
+ "key_type": "wpa2_psk",
+ "signal_level": 1,
+ "ssid": "I01BU0tFRF9TU0lEIw=="
+ },
+ {
+ "bssid": "000000000000",
+ "channel": 0,
+ "cipher_type": 2,
+ "key_type": "wpa2_psk",
+ "signal_level": 1,
+ "ssid": "I01BU0tFRF9TU0lEIw=="
+ },
+ {
+ "bssid": "000000000000",
+ "channel": 0,
+ "cipher_type": 2,
+ "key_type": "wpa2_psk",
+ "signal_level": 1,
+ "ssid": "I01BU0tFRF9TU0lEIw=="
+ },
+ {
+ "bssid": "000000000000",
+ "channel": 0,
+ "cipher_type": 2,
+ "key_type": "wpa2_psk",
+ "signal_level": 1,
+ "ssid": "I01BU0tFRF9TU0lEIw=="
+ }
+ ],
+ "start_index": 0,
+ "sum": 11,
+ "wep_supported": false
+ },
+ "qs_component_nego": {
+ "component_list": [
+ {
+ "id": "quick_setup",
+ "ver_code": 3
+ },
+ {
+ "id": "sunrise_sunset",
+ "ver_code": 1
+ },
+ {
+ "id": "iot_cloud",
+ "ver_code": 1
+ },
+ {
+ "id": "inherit",
+ "ver_code": 1
+ },
+ {
+ "id": "firmware",
+ "ver_code": 2
+ }
+ ],
+ "extra_info": {
+ "device_model": "HS220",
+ "device_type": "SMART.KASASWITCH",
+ "is_klap": false
+ }
+ }
+}