# pool-level-sensor — Pool Level Float Switch (POOL-LVL-0E953B)

**Module ID**: `6a174dd1e0b88ea3e925531c`  
**Serial**: `0300020E953B0001`  
**MAC**: `C8:B9:61:0E:95:3B`  
**UUID**: `030058B9610E953B00000001000E953B`  
**Firmware**: 7.3.1 | **Hardware**: B | **Manufacturer**: `03`  
**Type**: `pool-level-sensor`  
**Role**: Detects pool water level — triggers fill valve via LRLEVEL (lr-niv)

---

## Inputs

| Input ID | Index | Type | Unit | Interval | Notes |
|---|---|---|---|---|---|
| `6a174dd1e0b88ea3e925531e` | 1 | 21 (level TOR) | raw (0/1) | 1 min | Main level switch |
| `6a174dd1e0b88ea3e925531f` | 2 | 0 | raw | 0 (event-driven) | Secondary / aux (no telemetry recorded) |

Both inputs: expression `x` (raw passthrough). `metadata.equipmentType: "waterLevel"` on input 1.

### Recent readings

```
2026-05-31T14:54  1  (level OK / above threshold)
2026-05-30T18:27  1  (level OK)
2026-05-29T16:18  0  (level LOW — fill triggered)
2026-05-29T16:17  1
2026-05-29T15:59  0  (level LOW)
```

`0` = water below threshold (fill needed)  
`1` = water level OK

Only 11 events recorded over the last month — sensor only transmits on state change.

---

## Remote state

- Battery: **41%** — low, needs replacement
- Last radio contact: 2026-06-04T20:14:07Z
- Relay: `60ca4276ad69dac1558f7c61` (LRMB10)

The `poolLevelSensorCleaningReminder` alert (2026-05-28) confirms this device needs cleaning.

---

## Notes

- Works in tandem with `LRLEVEL-0D2ED9` (lr-niv): when this sensor reads 0, LRLEVEL opens the fill valve
- No programs or outputs — pure sensor
- Type 21 = pool level TOR switch (new type, not seen in other modules)