Flex 4EX2 / 6EX2 MRX CE Instruction Manual
November 2018
Page 7 of 44
1 Introduction
The Flex EX2 radio remote control systems are designed for control of industrial equipment and machinery
such as overhead traveling cranes, jib cranes, gantry cranes, tower cranes, electric hoists, winches,
monorails, conveyor belts, mining equipment and all other material handling equipment where wireless
control is preferred.
Each Flex EX2 system consists of a transmitter handset and a receiver unit. Other standard-equipped
accessories include transmitter waist belt, vinyl pouch, pushbutton labels, LED labels, output cable and
instruction manual CD.
List of notable features includes:
• Advanced Controls – the system utilizes dual advanced microprocessor controls with 32-bit CRC
and Hamming Code, providing ultra-fast, safe, precise, and error-free encoding and decoding.
• Frequency Hopping RF Transceiver – the system automatically searches and locks onto a free
and uninterrupted channel at every system startup or during operation when encountering radio
interference. The system is also capable of two-way communication between the transmitter and
receiver as well as receiver-to-receiver with system status and relay output feedbacks.
• Zero-G Sensor Embedded – the transmitter is embedded with a Zero-G sensor to guard against
any unintended control of the crane or equipment when transmitter is thrown or dropped.
• Wireless Remote Pairing Function – system information can be transferred wirelessly between
two transmitters or between a transmitter and a receiver without the hassle of resetting the spares.
• Reliable Pushbuttons – the pushbuttons have gold-plated contacts and are rated for more than
2 million press cycles. The defined snap-action steps provide positive tactile feedback even
through gloves.
• Low Power Consumption – requires only two “AA” alkaline batteries for more than 100 hours of
uninterrupted operation between replacements.
• Durable Nylon and Fiberglass Composite Enclosures – highly resistant to breakage and
deformation even in the most abusive environments. The receiver enclosures and output cables
are UL94-V0 rated. The transmitter and receiver enclosures are IP66 rated.
• Full Compliance – all systems fully comply with the FCC Part: 15 Rules and European Safety
Standards.
• Other Optional Accessories and Features – transmitter magnet mount, transmitter belt clip,
transmitter lanyard, transmitter rubber guard, miniature indicator light and buzzer, charging station,
external antenna kit, multiple receivers function, and many others.
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