Model: SJCGQ11LM
$15 – $25
Zigbee water leak sensor with IP67 rating. Instant alerts, 2-year battery, HomeKit compatible via hub.
You want HomeKit water leak notifications
Works with Apple HomeKit for critical alerts. Can trigger automations to shut off smart water valves.
You already have an Aqara hub and ecosystem
Seamless integration with Aqara automations. Trigger smart valves, send notifications, or sound alarms.
You need multiple sensors under sinks/appliances
Low cost allows deploying many sensors. 2-year battery life with CR2032. Compact size fits tight spaces.
You want budget water leak protection
Cheapest reliable water leak sensor at ~$20. IP67 rated dustproof and waterproof. Detects both slow trickles and fast leaks.
You need large area coverage with a single sensor
Point detection only - covers a small spot. Eve Water Guard has 6.5ft cable for larger area coverage.
You do not have an Aqara hub
Requires Aqara hub ($30-60 extra). Consider Meross or Govee for hub-free options.
You need 100% reliable critical infrastructure protection
Reports of sensors going offline unexpectedly. For critical applications, consider redundant sensors.
Sensors randomly drop offline even with good Zigbee signal. Can stay disconnected for days before reconnecting.
Aqara ForumT1 version reports "Unknown" status. Battery status not always reported. May need firmware updates.
GitHub IssuesTemperature check-in can take 50-60 minutes in stable conditions. Leak detection is instant but status polling is slow.
HomeKit ReviewsFalse alarms common complaint - sensor triggers without water present.
User ReviewsSensors randomly go offline for days
commonCause: Zigbee connectivity issues even with good signal strength
False alarms without any water present
commonCause: Humidity, condensation, or sensor placement on damp surfaces
Status updates only every 50-60 minutes when dry
widespreadCause: Battery-saving design - only instant update on leak detection
Battery drains faster than 2-year spec
occasionalCause: Frequent check-ins or poor Zigbee connection causing retries
Small detection area - only covers single point
widespreadCause: Design limitation - no extension cable like Eve Water Guard
Placing sensor on condensation-prone surfaces
False alarms triggered by humidity/condensation, not actual leaks
Tip: Ensure surface is dry and not prone to condensation. Test placement before relying on it.
Installing only one sensor for large area (under washer)
Leak may not be detected if water flows away from sensor
Tip: Use multiple sensors around large appliances. Consider Eve Water Guard cable for better coverage.
Placing sensor too far from Aqara hub
Sensor goes offline and misses critical leak alerts
Tip: Keep within 7-10m of hub. Add Zigbee repeaters for distant locations like basements.
Remote push notifications, Alexa/Google integration, alert history in Aqara app.
Zigbee leak detection to hub is local. HomeKit automations run locally. Local siren can trigger.
Leak detection events, timestamps, battery status, temperature readings.
Simple leak sensor - no audio/video. Event data logged to Aqara cloud if enabled.
Tested with up to 32 devices
IP67 waterproof/dustproof. Instant leak detection. Status polling every 50-60 min when dry. Range 7-10m from hub.
Max 32 child devices per Aqara hub. Point detection only - no extension cable. Sensors may drop offline unexpectedly.
Eve Water Guard
If: Need larger area coverage or built-in siren
Fibaro Flood Sensor
If: Want standalone operation without hub or temperature sensing
Meross Smart Water Sensor
If: Want cheaper multi-sensor deployment with own hub
You have an Aqara hub and need basic leak protection
Cheapest option for Aqara ecosystem. IP67 rating and 2-year battery. Good for under sinks and appliances.
You need reliable alerts for vacation home or rental
Reports of sensors going offline are concerning for critical applications. Consider redundancy or professional system.
You want to cover large area like laundry room floor
Point detection only. Need multiple sensors or Eve Water Guard with extension cable for large areas.
You want affordable protection for multiple water points
At $20 each, deploy sensors at every sink, toilet, and appliance. Great value for whole-home coverage.
Usually caused by condensation, high humidity, or placement on damp surfaces. Ensure placement is dry and not prone to moisture buildup.
Source: TroubleshootingUses CR2032 coin battery. Rated for 2 years but may be shorter with poor Zigbee connection or frequent alerts.
Source: Product SpecsLeak detection is instant when water touches the contacts. However, status polling when dry takes 50-60 minutes.
Source: User ReviewsYes, IP67 rated - dustproof and waterproof. Can be submerged briefly without damage.
Source: Product SpecsYes, it requires an Aqara Zigbee hub. Not compatible with other hubs. Hub sold separately for $30-60.
Source: Aqara FAQ
