Aqara E1

The Aqara Water Leak Sensor E1 is a compact battery-powered detector for placing near sinks, appliances, pipes and other locations where early water detection is useful. The E1 model is SJCGQ13LM and communicates over Zigbee.

The sensor requires a compatible Zigbee hub; it does not connect directly to Wi-Fi. When the contacts on the bottom detect water, the event can be passed through the hub for alerts and automations. This E1 variant can be used with Mi Home through compatible Xiaomi/Aqara gateways, although availability depends on the gateway and account region.

The E1 uses a CR2032 coin cell and measures approximately 50 × 50 × 15 mm. Pack-size options in the listing are simply multiple copies of the same sensor and do not change the product specifications.

Because Aqara’s global ecosystem increasingly emphasizes Aqara Home, buyers using Mi Home should confirm that their intended regional hub exposes the E1 sensor in Xiaomi Home before purchase.

For reliable automations, pair the sensor with the gateway that will remain in the installation and confirm that it appears in the selected Mi Home region. Zigbee sensors depend on the hub for remote alerts, history and scene triggers. Placement should prioritize the event being detected and stable radio coverage; multi-packs simply provide additional independent sensors for other locations.

A sensor becomes most useful when its event is tied to a clear response: a phone alert, a lighting scene, a security routine or another supported automation. Test the trigger after installation and again after moving the gateway. Battery status should also be monitored in the app where available, since a silent or unreachable sensor cannot provide reliable protection or automation input.