Enhance Job Site Safety with BlokAlert: Crane Safety Alert System
Operating cranes involves complex lifts and moving heavy loads near workers. That’s why communication and safety on the job site is critical and a crane safety warning system can help. Introducing the innovative BlokAlert system – it’s designed to enhance crane safety through better alert technology. BlokAlert is a crane safety warning system that attaches magnetically to the crane block, so it’s easy to install, visible, and within reach when you need it. With the push of a button on the handheld fob, it emits a bright beacon light and a 107 dB alarm tone before and during any load movements.
This provides an clear visual and audible warning to ground workers that a lift is in progress as well as alerting ground workers to the position of a suspended load. It’s a major improvement over old-fashioned air horns or whistles for crane communication.
Key Benefits of BlokAlert:
- Magnetic attachment – sticks right to the block for easy installation
- 500+ programmable sounds and multiple colors help cut through noisy sites
- Loud 107 dB alarm carries across the area
- Handheld fob for easy triggering from the crane operator or riggers
- Available Footswitch accessory for hands-free operation from the crane cab
- Lightweight and durable construction stands up to tough conditions – IP67 4 rating
- Helps improve compliance and safety on the job site
BlokAlert is all about giving crane operators and site managers a better way to increase job site communication and safety. Protect your crew and your reputation with the crane warning system you need – BlokAlert.
Want to learn how you can create a safer worksite? Check out these FREE downloads, product demos, articles, videos, and podcasts!
FREE Downloads
- Lifting & Rigging Site Assessment Guide
- Lifting & Rigging Best Practices Infographic
- Rigging Gear Inspection Field Reference
- Lifting & Rigging Inspection Frequencies & Records Guide

Articles, Product Features, Videos, & Podcasts
- How Can You Ensure Your Overhead Lifts Are Safe?
- Which Crosby | Straightpoint Load Cell Is Right For You?
- What’s the Verton EVEREST SpinPod, & How Does It Make Lifts Safer?
- What’s a Self-Locking Hook, & How Does It Make Lifts Safer?
- What Is a Sling Angle, and How Can Knowing Them Make Our Lifts Better?
- How Is Technology Changing the Lifting and Rigging Industry?
- How Is ITI Incorporating Technology Into Crane Operator Training?
Contact Mazzella
- Schedule Remote or In-Person Rigging Training
- Contact Mazzella’s Rigging Division
In this video:
0:00 – What is BlokAlert?
0:23 – How do you install BlokAlert?
0:53 – How does BlokAlert work?
Disclaimer:
Any advice, graphics, images, and/or information contained herein are presented for general educational and information purposes and to increase overall safety awareness. It is not intended to be legal, medical, or other expert advice or services, and should not be used in place of consultation with appropriate industry professionals. The information herein should not be considered exhaustive and the user should seek the advice of appropriate professionals.