CESTSEN Launches GM-300 Nuclear Radiation Detection Devices for Alpha, Beta, Gamma and X-Ray Monitoring

Shenzhen, China — Shenzhen Wanyi Technology Co., Ltd., a certified high-tech manufacturer of radiation measurement equipment operating since 2011, has released the GM-300 series of nuclear radiation detection devices. The GM-300 range is built for professional users who require accurate, repeatable readings of alpha, beta, gamma and X-ray radiation in the field, in the laboratory or on the factory floor.

Radiation screening is no longer confined to the nuclear industry. Ports and border crossings screen cargo for contaminated scrap, recyclers check incoming metal loads, construction teams verify building materials, hospitals monitor X-ray rooms, and laboratories track isotope handling. The GM-300 was engineered around these everyday verification tasks: it must be pocketable, quick to switch on, easy to read in daylight and loud enough to warn a user wearing hearing protection.

One Platform, Five Detector Configurations

Buyers can therefore standardise on one interface, one battery and one accessory set across an entire inspection team while still giving each operator the tube technology suited to the job. The GM-300-C is the general-purpose choice for surface contamination swipes thanks to its mica window and Bq/cm² surface activity reading, while the GM-300-XH is aimed at dose-rate work where higher range and energy compensation matter most.

Built for Real Field Conditions

• Multi-mode alarm: user-settable threshold with sound, vibration and flash indication — a combination that works in noisy plants, in bright sunlight and in locations where audible alarms would be inappropriate.
• Trend visualisation: a live graph of the past hour with automatic maximum and average calculation, so operators can spot a rising trend instead of staring at a flickering number.
• Dual measurement modes: Fast mode for leak hunting and Smooth mode for stable, reportable values.
• Peak hold and cumulative dose: automatic maximum hold plus cumulative dose accumulation with manual reset.
• Extended logging: the GM-300-X and GM-300-XH variants store up to 100,000 records and support PC connection for downstream reporting.
• Field endurance: 2200 mAh 3.7 V 18650 lithium cell, under six hours to recharge at 5 V / 500 mA, with online charging through a Type-C port.
• Compact body: 120 × 58 × 28.5 mm and roughly 120 g, rated for −20 °C to 60 °C and 5–95 % RH non-condensing.
• Bilingual interface: English and Chinese menus, with measurement accuracy better than ±20 %.

Typical Applications

Customers deploy the GM-300 series across a wide spread of regulatory and industrial scenarios: detection of radiation leaks and surface contamination; environmental monitoring of air, water and soil; inspection of warehouses, ports, medical facilities and nuclear sites; radioactivity screening of building materials, ceramics, glassware and home decoration products; landfill and waste-dump assessment; monitoring around medical X-ray equipment and drilling tools; personal property and jewellery screening; and rapid location of lost or orphan sources.

Ordering and Delivery

About Shenzhen Wanyi Technology Co., Ltd.

Founded in 2011 and recognised as a national high-tech enterprise, Shenzhen Wanyi Technology designs and manufactures radiation measurement instruments under the CESTSEN brand. The company focuses on portable detection hardware for isotope handling, radiation device inspection, materials processing and personal dose monitoring, and supplies distributors, system integrators and safety managers worldwide.

Buyers can order a single evaluation unit to benchmark the GM-300 against existing equipment before scaling to fleet quantities, and technical support is available for detector selection based on the isotopes and dose rates involved.