Features and Benefits
For crane and lifting applications, the Trimble Anti-Two-Block system is streamlined and reliable, designed to prevent the lower hook block from coming into contact with the boom tip of the crane.
![](https://back-heavyindustry.trimble.com/sites/construction.trimble.com/files/styles/webp/public/2020-04/Lifting-LS055-Application-1-576x324.png.webp?itok=kQt1ZZHv)
Reliable Wireless Communication
- Wide communication range: 4,300 feet (1,300 meters)
- Get to work faster with a simple installation
- Sunlight-readable display, backlit for night visibility
- Wireless communication between displays and sensors eliminates the risk of cable breakage
![](https://back-heavyindustry.trimble.com/sites/construction.trimble.com/files/styles/webp/public/2020-04/Lifting-GS075-B-Application-2-576x324.png.webp?itok=DDGkQlvl)
Improve Jobsite Safety
- Promotes operator awareness with real-time information
- Reduces the risk for a dropped load or on-site accident
- Prevent injury to personnel and damage to the crane and/or load
![](https://back-heavyindustry.trimble.com/sites/construction.trimble.com/files/styles/webp/public/2020-04/Lifting-GS075-B-Application-1-576x324.png.webp?itok=aRqDOIZ7)
Flexible and Versatile Technology
- Easily adapts to factory cable connections
- Options for safe operation in hazardous areas
- User-settable visual and audible alarms
![GS375 Anti-Two-Block Display](https://back-heavyindustry.trimble.com/sites/construction.trimble.com/files/2020-04/Lifting-GS375-A2B-Display-Studio-1040x1040.png)
GS375 Anti-Two-Block Display
- Compact design ideal for stand alone Anti-Two-Block event monitoring
- Audible and visual alarms activate when the hook has reached maximum safe height
- Monitor up to two A2B switches simultaneously
- Can trip function lockouts on cranes with installed solenoid valves
![GS075-B Anti-Two-Block Switch](https://back-heavyindustry.trimble.com/sites/construction.trimble.com/files/2020-04/Lifting-GS075-B-A2B-Switch-Studio-1040x1040.png)
GS075-B Anti-Two-Block Switch
- Mounted on the boom tip
- Sends an immediate alarm if the battery is removed or if an alarm condition occurs
- Stops transmitting 5 minutes after the display is turned off to conserve battery life, no locking clip required
- Get back to work faster with field-replaceable parts
- Hazardous area-certified option available
![LS051 Mechanical Anti-Two-Block Switch](https://back-heavyindustry.trimble.com/sites/construction.trimble.com/files/2020-04/Lifting-LS051-A2B-Switch-Studio-1040x1040.png)
Mechanical Anti-Two-Block Switch
- Mounted on the boom tip
- Sends an immediate alarm if the battery is removed or if an alarm condition occurs
- User replaceable internal switch mechanism for a faster return on investment
- A 3-wire connection allows for either normally open or normally closed circuits
- Built-in 4.7 K resistor for seamless integration into existing systems
- Hazardous area-certified option available
Meet Our Customers
Learn how customers around the globe are using Trimble technology to be more efficient and profitable.
Literature
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