IKEA E2202

Water leak sensor

IKEA’s BADRING water leakage sensor: a small Zigbee sensor that sounds an alarm when water bridges the two metal prongs underneath it. It runs on one 1.2 V AAA NiMH cell and is rated IP44 for indoor use.

IKEA E2202
  • Zigbee

Water leak sensor

Compatibility

Compatible with EpiSensor Edge over Zigbee.

Pair it with the Zigbee radio on an EpiSensor Gateway. Edge reads it locally on the Gateway.

Edge reads 4 values from it, listed under Interface.

Connect it with

Specifications

It works on its own as a local alarm, and it is ready to use as soon as the battery is in. Silicone feet hold it in place without tape or adhesive, which IKEA advises against because they can stop water reaching the prongs. IKEA suggests damp places such as bathrooms, laundry rooms and basements, and under sinks and appliances.12

Power
Battery. One AAA/HR03 1.2 V rechargeable cell, bought separately. IKEA recommends its LADDA 750 NiMH cell and warns against the wrong battery type.1
Detection
Two metal prongs underneath; alarm when both touch water1
Ingress protection
IP441
Working temperature
0 to 40 °C, indoor use only1
Wireless
Zigbee, 2405 to 2480 MHz, 7.3 dBm EIRP1
Range
10 m in open air1
Battery
1 × AAA/HR03 1.2 V; IKEA recommends LADDA 750 (750 mAh NiMH)1
Housing
ABS plastic2
Factory reset
Press the pairing button 4 times within 5 seconds1

Where it is used

Interface

On the Zigbee network it joins as a sleepy end device.4

Readings and settings, with units and ranges where IKEA publishes them. readable, writable only.

Download
ReadingUnitRange or valuesAccess
Measurements 1
Water leak - Binary state Read only
Settings 1
Identify - identify Write only
Diagnostics 2
Battery % 0 to 100 % Read only
Voltage mV - Read only

The sensor sleeps between reports, so an identify command may not act until it wakes.4

The leak state is the IAS Zone alarm. Battery level is reported as a percentage and battery voltage in millivolts.5

On firmware 1.0.7, users have observed the sensor playing a low-battery tune every 64 minutes once the battery reaches 30 %.4

Setup

  1. Open pairing in Edge

    In Edge, open pairing on the Gateway’s Zigbee network. The Gateway accepts new devices while pairing is open.

  2. Fit the battery

    Open the back of the sensor and fit one AAA/HR03 cell. The pairing button is under the cover, next to the battery.1

  3. Put it into pairing mode

    Press the pairing button 4 times in a row. The red light flashes a few times and goes out, then pulses after a few seconds while it searches. It goes out when the sensor has joined. Four presses within 5 seconds is also IKEA’s factory reset.4

  4. Confirm the join

    Close the battery cover and check that Edge identifies it as IKEA E2202 and shows a battery level.

  5. Test the alarm

    Stand the sensor, prongs down, in a bowl with 1 to 2 mm of water, so that only the prongs are wet. The alarm sounds and Edge shows a water leak. Dry the prongs and check the leak clears.1

Common questions

Does the BADRING need an IKEA DIRIGERA hub to work with Edge?
IKEA needs its DIRIGERA hub for its own app and notifications, and the sensor cannot join the older TRÅDFRI gateway. The sensor itself is Zigbee-based with a documented interface, so it joins the Zigbee radio on an EpiSensor Gateway directly and Edge reads it there.234
Does it still alarm without a network?
Yes. IKEA documents it as ready to use without a hub: it sounds its alarm when water touches both prongs, whether or not it has joined a network.1
Why does it beep about once an hour?
That is likely the low-battery tune. On firmware 1.0.7 the sensor has been observed playing it every 64 minutes once the battery is at 30 % or less. IKEA also shows low battery by lighting the red LED three times. Recharge or replace the cell.14