Frequently asked questions

A hostless parking sensor carries its own processing, so it signals obstacles without a separate parking ECU. It cuts wiring and cost on vehicles that do not need a full park-assist controller.

LIN lets every sensor share one bus wire to the controller, reports diagnostics, and allows the controller to configure each sensor. It is the standard for current OEM park-assist systems.

Many markets require TPMS on new passenger cars, including the United States, the European Union and China. Aftermarket kits add the same warning to vehicles built without it.

TPMS sensors sleep between transmissions, so a sensor battery typically lasts several years. Battery life depends on transmission interval, temperature and how much the vehicle is driven.

The 76 to 81 GHz band allows up to 4 GHz of sweep bandwidth, which gives centimetre-level range resolution, and its short wavelength keeps antennas small enough to hide behind a bumper or door panel.

Ultrasonic sensors are low cost and accurate below a few metres, ideal for parking. Radar reaches tens of metres, measures speed directly and works at driving speed, so it suits blind-spot and door-opening warnings.

Typical accuracy is around ±1 cm plus a small percentage of the reading, depending on the model, the target and the air temperature. Each DWIN datasheet lists the accuracy for that model.

It is the minimum distance the sensor can measure. Inside it the transducer is still vibrating from its own pulse and cannot detect an echo. Choose a model whose blind zone is shorter than your closest target.

Yes. Sealed probes rated IP67 or higher work outdoors and in rain. Strong wind, heavy rain and foam can weaken the echo, so allow margin in range.

Yes. An externally mounted sensor couples ultrasound through metal, plastic or glass walls and measures the liquid column from below, so the tank is never opened or drilled.

It is mounted under the bin lid, measures the distance to the waste and reports the fill percentage over NB-IoT, LoRa or another network so collection routes run only to bins that need emptying.

Radio waves at Wi-Fi and Bluetooth frequencies are absorbed by water within centimetres. Acoustic signals carry much farther, so underwater devices use ultrasound to communicate.

Choose laser for long range, small targets and fast updates. Choose ultrasonic for transparent or dark targets, dusty air, low cost and wide-area obstacle detection.

A pressure sensor produces a small raw signal from its sensing element. A pressure transmitter adds the electronics that compensate, calibrate and convert that signal into a standard output such as 4 to 20 mA for a control system.

It hangs at the bottom of a tank or well and measures the hydrostatic pressure of the liquid above it. Pressure rises in proportion to depth, so the transmitter outputs liquid level directly; a vented cable references it to atmosphere.

A Pt100 is linear, interchangeable and accurate over a wide range, which suits industrial measurement. An NTC thermistor is cheaper and more sensitive over a narrow range, which suits HVAC and appliances.

A tilt sensor measures static inclination against gravity, usually on one or two axes. An IMU measures acceleration and angular rate on three axes, so it can track attitude while the platform moves.

Several years is typical. Battery life depends on the reporting interval, the network and the temperature, and is stated in each product datasheet.