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Model No: DYP-SL03

Ultrasonic Ultra-thin Wireless Liquid Level Sensing Device

minimum order :

1 piece

Supply Ability :

10000piece / Month

Stock Time :

7Day

Country of Origin :

Shenzhen, China

Quantity :

Contact Now

Ultrasonic Ultra-thin Wireless Liquid Level Sensing Device

Module : DYP-SL03

DYP-SL03 is an ultra-thin wireless liquid level sensing device designed specifically for monitoring the remaining volume of liquefied gas cylinders and storage tanks in households, restaurants, and small and medium-sized enterprises. The product adopts an external non-contact thickness measurement detection solution, paired with BLE 5.0 low-power Bluetooth, a replaceable coin cell battery, and a companion mobile app. Without damaging the gas cylinder or requiring any drilling or valve opening, it continuously and accurately collects liquefied gas remaining volume data and wirelessly transmits it back, enabling visualization of cylinder remaining volume and proactive warnings for gas usage safety.

Here comes the detailed specifications of DYP-SL03 :

Category	Parameter	Value	Unit	Remark
Performance Parameter	Variable	1. Pure propane (95%–100%) 2.Pure butane (95%–100%) 3.Propane-butane gas mixture (mixing ratios such as 50/50, 75/25, etc.)	/	/
	Range	3.5–100	cm	(1)
	Blind Zone	≤3.5	cm
	Distance Measurement Accuracy	± (1 + S*0.5%)	mm	“S”represents the measurement distance (2)
	Angle	≥1	°	(3)
	Output Method	Bluetooth Low Energy 5.0+	/	(4)
	Working Cycle	Working Mode Configurable 1. BBQ mode: collect and report data once every 30 minutes. 2. Indoor mode: collect and report data once every 4 hours. 3. Immediate reporting can be triggered by pressing a button.	/	/
Electrical Specification	Power Supply	CR2032 coin cell battery (3V)	/	/
	Battery Life	≥90	days	(5)
	Protection Rating	IP66	/	/
	Dimension	Length × Width × Height: 82 × 60 × 10 mm	/	/
Physical Characteristic	Housing Material	PC + ABS (V0 flame retardant)	/	/
Physical Characteristic	Installation Method	Magnetic Material Tank: fixed with the magnet included with the product Non-magnetic Material Tank: fixed with 3M adhesive	/	/

Remarks:

(1) 6 mm iron plate container, water medium, measuring range ≥1 m.
(2) Measured at a liquid level of 30 cm on a standard 16.5 kg steel tank at a temperature of 25°C and a humidity of 65% RH.
(3) The angle is measured at a liquid level of 30 cm with the liquefied gas tank deflected.
(4) The communication standard is BLE 5.0 low-power Bluetooth.
(5) Under normal temperature and humidity, at a low altitude of ≤500 m, and in BBQ working mode, the battery life is no less than 90 days with a single fully charged battery.

Product Features

DYP-SL03 is an ultra-thin wireless liquid level sensing device designed for monitoring the remaining volume of liquefied gas cylinders and storage tanks. It features a liquid level detection range of 30–1000 mm, a measurement accuracy of ±(1 + S*0.5%) cm, a detection resolution of 1 mm, and a minimum adaptable installation tilt angle of more than 1.2°. The device is powered by a replaceable 3V coin cell battery and delivers a battery life of more than 90 days at a standard sampling frequency of twice per hour, thanks to its ultra-low-power design. It is compatible with a wide range of cylinder specifications, including 2.5 kg, 4.5 kg, 9 kg, 15 kg, 20 kg, and 30 kg liquefied gas tanks, as well as aluminum tanks with a thickness of 1–7 mm and steel tanks with a thickness of 1–5 mm.

For wireless communication, the device uses bluetooth 5.0 low-energy technology. A mobile app can connect directly via bluetooth to read remaining volume data in real time and supports synchronized storage of historical data. Multiple customizable working modes are available: BBQ mode collects and reports data every 30 minutes, while indoor mode collects and reports data every 4 hours. The device offers two mounting options: magnetic attachment for magnetic storage tanks and 3M adhesive mounting for non-magnetic metal tanks. No modification to the gas cylinder is required, making installation extremely simple.

It also features a built-in automatic temperature compensation algorithm that corrects detection values based on ambient temperature, improving measurement accuracy in both high and low temperature environments. A medium-adaptive calibration function automatically adapts to various liquefied gas media, including pure propane, pure butane, and propane-butane mixtures. An LED status indicator provides intuitive feedback on Bluetooth pairing, measurement operation, and power on/off status.

Scope of Application

1. Household Daily Cooking Scenarios:

Residual monitoring of various household 2.5 kg–15 kg liquefied gas cylinders; fixed cylinder monitoring in basements, balconies, and kitchens.

2. Outdoor Leisure Gas Use Scenarios:

Real-time residual level viewing for liquefied gas tanks used in courtyard BBQ and camping picnics; suitable for open-air, high-humidity, and variable-temperature environments.

3. Commercial Scenarios for Restaurants & Small-to-medium Enterprises:

Batch digital management of commercial cylinders in multiple specifications (15 kg / 20 kg / 30 kg) for restaurants, canteens, and small processing plants.

4. Mobile Travel Gas Use Scenarios:

Cylinder monitoring installed at the bottom of RVs, camper vans, and mobile food trucks; adapts to bumpy driving conditions and ensures uninterrupted gas supply during travel.

5. Gas Service Provider Operation Scenarios:

Liquefied gas delivery companies remotely manage customer cylinder residuals, optimize delivery routes, and provide value-added gas safety warning services.

6. Complex & Special Environment:

Liquefied gas storage tank monitoring in high-humidity"hui nan tian"weather, open-air rain exposure, alternating high and low temperatures, and high-altitude areas within 4,000 m.

Wireless Communication Workflow & Common Application Scenarios

Device Functions

1. Indicator Light Status

Device Status	Indicator Light Status
Power on/off	Steady on →Off
Bluetooth broadcasting	Flashing
Sleep	Off

2. Device Button Functions

Function	Operation	Indicator Light Status
Power on	Long press for more than 2 second	After pressing the button, the indicator light turns steady on. Release the button after about 2–3 second. At this point, the light stays steady on for 5 second, then starts flashing.
Power off	Long press for 3 second	Under normal operating status, long press for 3 second. The indicator light will turn steady on. Release the button after the light turns off, and the device is powered off.
Broadcast	Short press in sleep status (not powered off)	After a short press, release the button, and the indicator light will turn steady on.
Reconnect Bluetooth	Long press for more than 5 second	While Bluetooth is connected, long press for more than 5 second until the indicator light changes from steady on to flashing. At this point, the current Bluetooth information will be cleared, and the device will re-enter Bluetooth broadcasting status.
DistanceMeasurement	Short press in connected status (not in sleep status)	While Bluetooth is connected, short press the button. The indicator light will stay steady on for 5 second, then turn off. At this point, one active liquid level measurement action is completed.

3. Device Working Logic

（1）The device wakes up every half hour (outdoor mode) or every four hours (indoor mode) to perform detection work;

（2）Upon automatic or manual wake-up, it collects the corresponding data and reports it;

（3）If data is collected upon automatic or manual wake-up but Bluetooth is not connected, the data will be stored in the historical data;

（4）After each broadcast ends, the device immediately enters sleep status and requires another button press to broadcast again.