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Spark WL-100 Tank Level Monitor: Big tanks. Deep tanks. One clear number.
The Spark WL-100 measures tanks up to 10 m deep with ultrasound, without touching the liquid. The sensor sends the level by LoRa radio to a receiver in the house, and you see it in the Tuya Smart app too, with high and low level alarms.
Read the tank from inside.
Mount the ultrasonic sensor on the tank. It measures from 40 cm to 10 m without contact and sends the level by LoRa to the indoor receiver. The receiver and Tuya Smart app show the level.
- Measure: Ultrasound reads without touching the liquid.
- Send: LoRa radio connects sensor and receiver.
- See: Check the receiver lights or the Tuya app.
The tank, in five lights.
Five blue lights show the level in 20% steps. The receiver also has LoRa antenna, Wi-Fi and status lights, and a power button. For exact level ratio and depth, open Tuya Smart.
- Five steps: 20, 40, 60, 80 and 100%.
- Exact reading: Level ratio and depth in the app.
- App support: Tuya Smart and Smart Life.
Get the alert on your phone.
Choose high and low levels for your tank. The Tuya Smart app sends the high or low level notification even when you are away. Ultrasound supports water, oil and other liquids without contact.
- High alarm: Choose the level before the tank overflows.
- Low alarm: Choose the level before it runs dry.
- From anywhere: Read level ratio and depth through the app.
Leave room for the blind area.
Screw the probe through the tank top and point it straight down, perpendicular to the liquid surface. Keep the highest liquid level at least 40 cm below the sensor, with a maximum sensor-to-bottom height of 10 m.
- Straight down: Hold the sensor perpendicular to the liquid.
- Away from the inlet: Falling water can cause false echoes.
- Away from the wall: Nearby tank walls can cause false echoes.
Specifications
| Model | Spark WL-100 |
| Kit | Ultrasonic sensor + LED receiver |
| Measuring | Ultrasonic, no contact |
| Range | 40 cm – 10 m |
| Blind area | 40 cm |
| Max. installation height | 10 m |
| Sensor to receiver | LoRa wireless |
| App | Tuya Smart · Smart Life |
| Alarms | High and low level, in the app |
| Receiver shows | Level in 5 steps, 20–100 % |
| Receiver lights | Level · Wi-Fi · status |
| Liquids | Water, oil and other liquids |
In the box
- WL-100 receiver with five level lights, Wi-Fi light and power button
- WL-100 ultrasonic sensor/probe with LoRa transmitter
- Power adapter for the receiver
