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R147 (radio)

The R147 wireless Anti-Two-Block system is a device that warns the operator upon an impending two-block situation. The R147 provides an audio and visual alarm when the hook reaches the maximum safe height to the boom tip. It has been designed to fit on almost all types of cranes. The system uses standard ¨AA¨ lithium batteries, making it easier and faster it replacement.

This wireless Anti-Two-Block system comes pre-calibrated and works with direct sequence spread spectrum transmission technology for an enhanced range of operation and better RFI resistance. The internal antenna in the switch and display is a unique RaycoWylie design that increase durability and provide less failures and downtime than systems with an external antenna. This system takes less than 30 minutes to install.

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Features and benefits
  • Direct Sequence Spread Spectrum transmission technology for an enhanced range of operation and better RFI resistance. [2.4 GHz Transceivers)
  • Internal antenna on both the display and sensor, which means low susceptibility to damage and less downtime
  • Display and switch pre-calibrated by the manufacturer R147
  • Display can monitor up to two switches
  • Easy installation and sensor replacement
  • Uses standard AA lithium batteries
  • Up to 1 year battery life [low battery warning)
  • User-friendly display
  • Audible and visual warning in case of two-block
  • Operating range: - Outdoor / line of sight 1 mile - Indoor / Urban 400 feet
  • CE, OSHA and FCC Compliant
Technical Data
  • Display Size: 4,69" x 3 ,13" x 2,13" [11,95 x 7,90 x 5,55 cm)
  • Display & Sensor Sealing: IP67 rating for display and sensor
  • Supply Voltage: 12 to 24 VDC [ Max: 10,2 to 30 VDC)
  • Operating Temperature: -4° F to 158° F (-20° C to 70° C)
  • Digital Output: External motion cut relay or alarm [max 500mA)


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