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Hi-Link HLK-LD7901B, Liquid Level Detection Radar Sensor (79GHz ~ 81GHz) — image 1
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Hi-Link HLK-LD7901B, Liquid Level Detection Radar Sensor (79GHz ~ 81GHz)

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RADAR Sensors for premium buyers

The Hi-Link HLK-LD7901B, Liquid Level Detection Radar Sensor (79GHz ~ 81GHz) by HI-LINK is a premium radar sensors designed for premium buyers. It features Manufacturer: Hi-Link and Item Type: Radar Sensor.

₹9,499
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Total: ₹9,499
Buying tip: A top-tier option — the best features and quality available in this category.
Estimated delivery: 23 Aug6 Sept
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Quick Specs

Manufacturer: Hi-Link
Item Type: Radar Sensor
Model No. / Name: HLK LD7901B
Distance range: 0.15m to 15m.
Operating Frequency(GHz): 79 GHz to 81 GHz
Shipping Weight: 0.01 kg

Ideal For

Electronics projectsArduino / Raspberry Pi buildsPrototyping
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SKU: robu-2546357Category: RADAR Sensors

About This Product

The Hi-Link HLK-LD7901B, Liquid Level Detection Radar Sensor (79GHz ~ 81GHz) by HI-LINK is a premium radar sensors designed for premium buyers. It delivers reliable performance at an accessible price.

Key Specifications

  • Manufacturer: Hi-Link
  • Item Type: Radar Sensor
  • Model No. / Name: HLK LD7901B
  • Distance range: 0.15m to 15m. — reliable connection even at a distance
  • Operating Frequency(GHz): 79 GHz to 81 GHz — smooth, flicker-free operation
  • Shipping Weight: 0.01 kg
  • Shipping Dimensions: 10 × 7 × 2 cm

Why Buy from Pricio?

Pricio sources this product directly, cutting out multiple middlemen. Every order includes free shipping, a 15-day return policy, and secure payment via Razorpay.

The water level gauge product is a detection sensor independently developed and produced based on the 79G millimeter wave detection principle, which has high measurement accuracy, low power consumption, high sensitivity, stable performance, and better adapts to the detection of water level.

Features:

  1. The product adopts narrow beam design, strong anti-interference ability, and long ranging distance
  2. 79G millimeter-wave high-band radar, which can achieve millimeter-level ranging accuracy
  3. The product has a high degree of integration, including a digital signal processor and controller, which can realize advanced radar digital signal processing algorithms

Package Includes:

1 x Hi-Link HLK-LD7901B, Liquid Level Detection Radar Sensor (79GHz ~ 81GHz)

Setup Guide

1
Identify the pins
Locate VCC (power), GND (ground), and data pins (SDA/SCL for I2C, MOSI/MISO for SPI, or TX/RX for UART). Refer to the pinout diagram on the product page.
2
Wire to your microcontroller
Connect VCC to 3.3V or 5V (check the module spec), GND to GND, and data pins to the appropriate GPIO pins on your Arduino or Raspberry Pi.
3
Install libraries
In Arduino IDE, go to Sketch → Include Library → Manage Libraries and search for the sensor library. Install the recommended version.
4
Upload example sketch
Open File → Examples → [library name] → Basic Example. Upload to your board and open Serial Monitor to view output.
5
Calibrate if needed
Some sensors (temperature, humidity, distance) may need a short warm-up period or calibration. Run the calibration sketch if provided.