diff --git a/lib/extension/homeassistant.js b/lib/extension/homeassistant.js
index 39eb3bb11..37df1c280 100644
--- a/lib/extension/homeassistant.js
+++ b/lib/extension/homeassistant.js
@@ -76,6 +76,16 @@ const configurations = {
             device_class: 'connectivity',
         },
     },
+    'binary_sensor_battery_low': {
+        type: 'binary_sensor',
+        object_id: 'battery_low',
+        discovery_payload: {
+            payload_on: true,
+            payload_off: false,
+            value_template: '{{ value_json.battery_low}}',
+            device_class: 'battery',
+        },
+    },
 
     // Sensor
     'sensor_illuminance': {
@@ -452,12 +462,12 @@ const mapping = {
     '900008-WW': [configurations.light_brightness],
     'Mega23M12': [configurations.light_brightness_colortemp_colorxy],
     'PSS-23ZBS': [configurations.switch],
-    'HS1SA': [configurations.binary_sensor_smoke],
+    'HS1SA': [configurations.binary_sensor_smoke, configurations.binary_sensor_battery_low],
     'Z01-A19NAE26': [configurations.light_brightness_colortemp],
     'AC01353010G': [configurations.binary_sensor_occupancy, configurations.sensor_temperature],
     'SP 120': [configurations.switch, configurations.sensor_power],
     'RB 248 T': [configurations.light_brightness_colortemp],
-    'HS3SA': [configurations.binary_sensor_smoke],
+    'HS3SA': [configurations.binary_sensor_smoke, configurations.binary_sensor_battery_low],
     'HS1DS': [configurations.binary_sensor_contact],
     'HS1WL': [configurations.binary_sensor_water_leak],
     '421786': [configurations.light_brightness],