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Handheld 4G/5G Phone Detector for Security & Prison | CIU
This handheld cell phone detector is a high speed scanning receiver utilizes a multi-band omni directional antenna system allowing security personnel to locate nearby cell phones in either standby mode or during active voice, text or data RF transmissions. The handheld mobile phone detector helps you to locate illegal cell phone, gps tracker.
This Customized 3G 4G LTE Cell Phone Detector Anti-Cheating in Exam can sense the presence of an activated mobile cellphone from a distance of one and-a-half metre. So it can be used to prevent use of mobile phones in examination halls, confidential rooms, etc. Check with CIU Co., Ltd. for custom 4G phone detector.
This Customized 3G 4G LTE Cell Phone Detector Anti-Cheating in Exam can sense the presence of an activated mobile cellphone from a distance of one and-a-half metre. So it can be used to prevent use of mobile phones in examination halls, confidential rooms, etc. Check with CIU Co., Ltd. for custom 4G phone detector.
RFD-10EU
5G LTE 4G Mobile Phone Detector for Anti-Cheat Exam& Spy, Prison for Europe
The RFD-10EU is a professional 5G / 4G mobile phone detector designed to detect active cellular signal transmissions in high-security environments such as prisons and examination centers. It supports adjustable sensitivity by frequency band and provides real-time signal strength monitoring, allowing security personnel to efficiently identify and locate unauthorized communication devices. Devices without signal transmission cannot be detected.
Professional 5G Mobile Phone Detector for High-Security Environments
The RFD-10EU is a handheld 5G / 4G / 3G / GSM mobile phone detector engineered for professional use in prisons, examination centers, and law enforcement operations. It enables security personnel to detect unauthorized communication devices based on real-time cellular signal activity.Designed specifically for European telecom environments, the RFD-10EU ensures accurate detection performance across modern 5G networks where traditional RF detectors are no longer sufficient.
Why RFD-10EU is the Preferred Choice for Security Professionals Cellular Signal-Based Detection (Accurate & Reliable)
The RFD-10EU detects active cellular signal transmissions across 5G, 4G, 3G, and GSM bands, making it highly effective for identifying unauthorized mobile communication devices.
Important: Detection is based on signal activity. Devices that are completely inactive with no signal transmission cannot be detected.
Adjustable Sensitivity by Frequency Band
Each frequency band can be individually adjusted, allowing operators to:
- Optimize detection performance
- Reduce environmental interference
- Improve accuracy in complex RF environments
This feature is essential for professional use in high-security or high-interference environments.
Designed for Prison & Exam Security
- Prison & correctional facilities
- National examination centers
- Law enforcement operations
- Government security inspections
Real-World Exam Anti-Cheating Application Insight
In modern exam security operations, unauthorized communication is rarely dependent on wearable devices alone. In practice, smartwatches and similar devices rely on a connected smartphone, which is the actual communication hub.
For example, a smartwatch typically communicates through Bluetooth or a paired mobile phone. However, Bluetooth transmission power is extremely low (typically 0.01–1 mW), making it unreliable for consistent detection in real-world environments. When the smartwatch is not actively connected or transmitting data, there is often no detectable signal at all.
For this reason, professional exam security systems focus on detecting the actual source of communication: the smartphone.
Smartwatches depend on smartphones that continuously emit stronger cellular signals across 2G, 3G, 4G, and 5G networks. These cellular uplink signals are the most reliable indicators of unauthorized communication activity in exam environments.
The RFD-10EU is specifically designed for this operational principle, enabling security teams to detect hidden or active mobile phones within approximately 10–15 meters, making it a practical and proven solution for exam anti-cheating enforcement.
What Can the RFD-10EU Detect?
The RFD-10EU is designed to detect active cellular signal transmissions, including:
- Mobile phones during calls, data transmission, or network activity
- Smartphones with cellular communication enabled
- Hidden communication devices using cellular signals
- 3G / 4G / 5G wireless covert cameras
Important: Devices that are completely inactive with no signal transmission cannot be detected.
This model is designed for cellular signal detection only and does not include Wi-Fi detection.
Typical Application Scenarios
- Prison contraband mobile phone detection
- Exam anti-cheating enforcement
- Law enforcement inspections
- Military and government security checks
- Corporate anti-espionage operations
FAQ
Can the RFD-10EU detect phones in standby mode?
The RFD-10EU detects cellular signal activity. If a phone generates background signals (such as periodic network communication), it may be detected. However, if the device is completely inactive with no signal transmission, it cannot be detected.
What is the detection principle of the RFD-10EU?
The RFD-10EU detects uplink cellular signals from mobile devices across 5G, 4G, 3G, and GSM frequency bands.
What makes RFD-10EU different from other RF detectors?
- 5G EU band support (3400–3800 MHz)
- Adjustable sensitivity for each frequency band
- Real-time signal strength display (signal bar per band)
- Professional-grade accuracy for security applications
These features allow users to fine-tune detection performance and improve locating efficiency in complex environments.
Request More Information
Looking for a reliable solution for prison security or exam anti-cheating applications? Contact us for professional recommendations tailored to your environment.
Features :
Specification :
| Overall Size | 3.2x9x19 cm | |
| Detection Frequency | 4G 703-748 MHz GSM 880-915 MHz CDMA 824-849 MHz UMTS(WCDMA) 1920-1980 MHz DCS 1710-1785 MHz 4G 2500 – 2570 MHz 5G 3400-3800 MHz Wi-Fi 2400MHz (Available in 4G versionl) |
|
| Build-in Antenna | Micro-strip multiband inverted-F Omnidirectional antenna | |
| Sensitivity | >-40 dBm | |
| Dynamic Range | 35dB | |
| Detect range | up to 15 meters | |
| Built-in battery | 2200mAh Single cell Li-Ion 3.8 V | |
| Duration | 16 Hours with fully charged battery | |
| Low Battery warning | <3.3V | |
| Audio | Alarm mode, Beeper speaker or Earphone(Vibration-option) Beep pitch modulated by signal strength | |
| LCD display | 4x16 alphanumerical with backlight | |
| Weight | 225 grams | |
Applications :
- In sensitive/important meeting rooms to check for hidden devices
- To check unauthorized mobile phone usage in offices, exam halls, hospitals, church, the holy place, mosque or prisons
- In vehicles to locate hidden tracking devices
- Security check to find the spy bug
It is also useful for detecting the use of mobile phone for spying and unauthorized video transmission. Please do not hesitate to contact CIU Co., Ltd. if you are interested in our Customized 3G 4G LTE Cell Phone Detector Anti-Cheating in Exam after referring our homepage. The cusotmized handheld mobile phone detector is the most sensitive mobile phone detector for it’s size, passive receiver and specifically tuned to the RF signature of cell phones including all 2G, 3G and 4G bands. CIU’s mission is to provide cellular phone detection capabilities to both business and government institutions around the world.