Rayco Electronic System, Ltd

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R147 – Wireless Anti-Two-Block (A2B) indicator for cranes – 66D0147K1


SKU: 66D0147K1

RaycoWylie part # 66D0147K1 – 1x switch, 1x weight and chain, 1x display .

Rayco Wylie SWITCH, A2B, WIRELESS FOR R147 ATBThe R147 wireless over-hoist limit system (anti two-block) is an easy to install cost- effective solution to monitor an over-hoist situation. With an inbuilt relay output to trigger a motion cut function, internal audible and visual operator warnings, clear LCD display, and low battery warning, the R147 is suited for those applications where running cables is not desired.


Introducing the R147 Wireless Over-Hoist Limit System, your reliable and hassle-free solution for monitoring over-hoist situations. This advanced anti two-block system is designed to be both easy to install and cost-effective, making it the ideal choice for maintaining safety in overhead lifting operations.

The R147 is engineered with cutting-edge features to ensure precise and efficient monitoring. Its inbuilt relay output is designed to trigger a motion cut function instantly when an over-hoist condition is detected. This rapid response capability adds an extra layer of safety to your operations, reducing the risk of accidents and equipment damage.

For seamless operation, the R147 is equipped with internal audible and visual operator warnings. This means that not only does the system detect potential issues, but it also provides immediate alerts to operators, enabling them to take prompt action when needed.

The crystal-clear LCD display offers a user-friendly interface, providing real-time information on the hoisting process. Operators can easily monitor load conditions and make informed decisions, enhancing overall safety and efficiency.

Worried about battery life? The R147 has you covered with its low battery warning feature. You’ll never have to guess when it’s time to replace the batteries, ensuring uninterrupted monitoring when it matters most.

One of the standout features of the R147 is its wireless design. It eliminates the need for running cumbersome cables, simplifying installation and reducing clutter. This makes it particularly well-suited for applications where a tidy and cable-free environment is desired.

In summary, the R147 Wireless Over-Hoist Limit System is your go-to solution for over-hoist monitoring. Its cutting-edge features, wireless convenience, and commitment to safety make it an indispensable addition to your lifting equipment. Choose the R147 for a safer, smarter, and more efficient lifting operation.


Technical DataInformation
Display Size4.69” x 3.13” x 2.13”(11.95cm x 7.90cm x 5.55cm)
Display RatingIP67
Relay Output1 (500mA)
Radio Frequency2.4 GHz
Operating Temperature-30° C to 70° C(-22° F to 158° F)
Supply Voltage10.2 to 30 Vdc
Operating Range100m
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    (418) 266-6600

    Hours of Operation (Eastern Time - Montreal)

    Monday – Friday 9am-5pm 
    Weekend – Closed