Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Brand	Telesky
Model Number	WCS1800
Sensor Type	Hall Effect
Max Current Detection	35A
Output Signal	Analog Voltage
Operating Voltage	5V DC
Protection Features	Short-Circuit and Overflow
Response Time	< 5µs
Operating Temperature	-40°C to 85°C
Package Type	Module with Pin Headers

6 reviews

Anonymous

Mar 24, 2026

Rating: 5/5

Perfect for my battery monitor project

This sensor works flawlessly with my Arduino setup. The 35A range is perfect for monitoring my e-bike battery without breaking the bank. Calibration was straightforward.

Anonymous

Mar 23, 2026

Rating: 5/5

Great value for money

Bought five of these for our workshop. They all performed consistently. The analog output is clean and easy to read with standard microcontrollers.

Anonymous

Mar 08, 2026

Rating: 5/5

Excellent for university projects

Used this for my final year electrical engineering project. The documentation online helped me interface it quickly. No noise issues observed in the readings.

Anonymous

Mar 07, 2026

Rating: 4/5

Compact and effective

Fits perfectly in tight spaces on my drone frame. Measures current draw accurately up to about 30A. Didn't push it to the full 35A limit yet, but confident it will hold.

Anonymous

Mar 05, 2026

Rating: 4/5

Good accuracy, fast shipping

Used this for a robotics arm motor control. The response time is very quick. Only giving 4 stars because the pin headers were slightly bent upon arrival, but easy to fix.

Anonymous

Mar 01, 2026

Rating: 5/5

Reliable protection features

I appreciate the built-in short-circuit protection. It saved my circuit when I accidentally wired something wrong during testing. Highly recommended for DIY solar projects.

5 FAQ

Q: How do I calibrate the sensor for precise readings?

A: Calibration involves measuring the output voltage at 0A and at a known load (e.g., 10A). Use these two points to calculate the sensitivity factor in your code. We recommend using a multimeter to verify the reference current.

Q: What is the exact output voltage at 0 Amps?

A: At 0 Amps, the output voltage is typically VCC/2 (approximately 2.5V when powered by 5V). Current flowing in one direction increases the voltage, while the opposite direction decreases it.

Q: Can this measure AC current as well as DC?

A: Yes, the WCS1800 Hall Effect sensor can measure both AC and DC current. The output will reflect the instantaneous current value, so for AC, you will see a varying voltage signal.

Q: Does this module work with 3.3V microcontrollers like ESP32?

A: Yes, the module operates at 5V, but the analog output is ratiometric. You can connect it to a 3.3V ADC, but ensure you adjust your code scaling factors accordingly. Some users add a voltage divider for safety.

Q: Is the screw terminal included for high current connections?

A: This specific module version comes with pin headers for the signal and power. The high-current path is usually a thick PCB trace or a dedicated pad; please check the product images for the specific terminal style included in this batch.

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