Shanghai Freesor Sensor Technology Co., Ltd.

Shanghai Freesor Sensor Technology Co., Ltd. Contact information, map and directions, contact form, opening hours, services, ratings, photos, videos and announcements from Shanghai Freesor Sensor Technology Co., Ltd., Industrial Company, 14th Floor, Block B, Lingang Science and Innovation City, No. 333 Ocean Road 1, Pudong New Area, Shanghai.

FREESOR is a holding subsidiary of Keli Sensing (stock code:603662), and its FREESOR independent brand covers special sensors for new energy vehicles, open-loop and closed-loop Hall current and voltage sensors, leakage current sensors, etc.

Our products This product is a digital sensor that adopts fluxgate technology and is used to detect direct curren...
10/06/2025

Our products
This product is a digital sensor that adopts fluxgate technology and is used to detect direct current.
🦩 single powersupply or 24V
💥 Current measurement for battery management systems (SOC,SOH,SOF, etc.)
👑 Rated current measurement range ±500A
💍 Working temperature range: -40 ° C ∽+85 ° C
🎊 Output signal: High speed CAN(500kbps)

Shanghai Freesor Sensor Technology Co., Ltd. was co-founded in 2005 by a number of experienced overseas returnees, and i...
05/06/2025

Shanghai Freesor Sensor Technology Co., Ltd. was co-founded in 2005 by a number of experienced overseas returnees, and is a high-tech enterprise specializing in design, research and development, production and sales. FREESOR is a holding subsidiary of Keli Sensing (stock code:603662), and its FREESOR independent brand covers special sensors for new energy vehicles, open-loop and closed-loop Hall current and voltage sensors, leakage current sensors, etc., which are widely used in new energy vehicles, photovoltaic, energy storage, rail transit and other industries. Our products have reached the leading level in the industry in terms of stability, precision and anti-interference.





web:www.freesor.com

✨【Hall Effect Current Sensors】High Precision ⚡️ Low Power ⚙️ High-Frequency Response🔍 Accurately measure DC/AC/Pulse cur...
03/06/2025

✨【Hall Effect Current Sensors】High Precision ⚡️ Low Power ⚙️ High-Frequency Response
🔍 Accurately measure DC/AC/Pulse currents with ±1% accuracy!
🔧 Ideal for VFDs, CNC machines, and DC power supplies—reliable performance!
📈 Compact size + low hysteresis = perfect for industrial applications! Custom solutions supported~
📞 Contact: +86 182 0177 2343 🌐 www.freesor.com

Customize adaptive learning paths with AI tutors & gamified exercises. 🧠 Practice real-world scenarios via live speaking...
23/05/2025

Customize adaptive learning paths with AI tutors & gamified exercises. 🧠 Practice real-world scenarios via live speaking sessions. 🗣️ Join global study groups for peer feedback. 🌐 Track growth with detailed progress dashboards. 📊 Unlock exclusive content & badges for motivation. 🏆 From basics to fluency—make every lesson count! 💡

More Info, Contact us at+86 182 0177 2343

⚡ FSV800D Hall Voltage Sensor – Precision isolation measurement up to ±800V! 📏 High linearity (
20/05/2025

⚡ FSV800D Hall Voltage Sensor – Precision isolation measurement up to ±800V! 📏 High linearity (

Launch a smart home energy monitor (📊) for real-time electricity tracking. Enable AI-powered insights 💡, 99.9% accuracy ...
15/05/2025

Launch a smart home energy monitor (📊) for real-time electricity tracking. Enable AI-powered insights 💡, 99.9% accuracy 🔍, and 5-minute updates ⏱️. Target eco-conscious households 🌱 & energy-saving enthusiasts. Boost engagement with app alerts 📱, peak usage reports 📊, and carbon footprint tracking 🌍. Guarantee 3-year battery life 🔋 & Wi-Fi 6 compatibility 🌐. Drive adoption with 30-day free trial! 🚀

More Info: Contact at WhatsApp +86 182 0177 2343

🚀 Precision Current Sensors for Industrial PowerMeasure AC currents (50A–2500A) with ±0.5% accuracy! 🎯Output 0–5V/10V DC...
13/05/2025

🚀 Precision Current Sensors for Industrial Power

Measure AC currents (50A–2500A) with ±0.5% accuracy! 🎯

Output 0–5V/10V DC, IP20-rated, and 6kV isolation. ⚡

Perfect for motor monitoring, PLC integration, and overload protection. 🔌

Durable, reliable, and easy to install. 💪

Contact us at WhatsApp: +86 182 0177 2343 🛠️

⚡ FS1000W50: Precision 3-phase AC current measurement! 📊 High accuracy (±0.5%FS), low temp drift (≤±0.5mV/°C), and AC6kV...
12/05/2025

⚡ FS1000W50: Precision 3-phase AC current measurement! 📊 High accuracy (±0.5%FS), low temp drift (≤±0.5mV/°C), and AC6kV isolation. 🛡️ Wide range (0-±2000A), passive design, IP20 protection. 🌡️ Works -25°C to +85°C! 🎯 Output: 0-5V/10V. Perfect for industrial control, feedback systems. Call: +86 182 0177 2343 📞

✨ High-Precision Current Sensor ✨Measure DC, AC, or pulsed currents with 0.5% accuracy ⚙️! The FSM050NPTR offers:✅ ±150A...
07/05/2025

✨ High-Precision Current Sensor ✨

Measure DC, AC, or pulsed currents with 0.5% accuracy ⚙️! The FSM050NPTR offers:

✅ ±150A range | ✅ Low temp drift 🌡️

✅ 3kV insulation 🔋 | ✅ Ultra-fast response ⚡

Perfect for SMPS, UPS, and motor drives 🛠️!

Compact design, customizable appearance 🎨—reliable for harsh environments 🌪️.

Contact us now for tailored solutions! 📞 +86 182 0177 2343

Precision meets safety with our Hall-effect current sensors! ⚡️Measure DC, AC, pulses, and irregular waveforms with ±0.1...
30/04/2025

Precision meets safety with our Hall-effect current sensors! ⚡️
Measure DC, AC, pulses, and irregular waveforms with ±0.1% linearity 🔍.
3kV isolation 🛡️, ultra-fast

Address

14th Floor, Block B, Lingang Science And Innovation City, No. 333 Ocean Road 1, Pudong New Area
Shanghai
210000

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