# Allen-Bradley 855T-B20GL4 Bulletin 855T Control Tower Stack Light, 4-Module LED, 20-30V DC - MROSupply.com

***Allen-Bradley 855T-B20GL4 Bulletin 855T control tower stack light with four modular LED light modules, powered by 20-30V DC. This stack light provides high-visibility, multi-color visual alerts for machine status indication, supporting efficient plant floor communication and operator awareness in control panel and machine-mounted applications.***



## Product details:

- Catalog number: 855T-B20GL4
- SKU: 5708979
- Obsolete: Item no longer available through MROSupply.com
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Allen Bradley](https://www.mrosupply.com/brands/allen-bradley/)
- Category: 
    - [Stack](htts://www.mrosupply.com/electrical/visual-audible-signaling/visual/stack/)
    - [Visual](htts://www.mrosupply.com/electrical/visual-audible-signaling/visual/)
    - [Visual & Audible Signaling](htts://www.mrosupply.com/electrical/visual-audible-signaling/)
    - [Electrical](htts://www.mrosupply.com/electrical/)
- Unit of measure: each
- Weight: 0.001 lb
- Returns: Yes


## Product images:
- https://static.mrosupply.com/images/noimage.webp


## Product documents / software:

- [931-in009_-mu-e](https://documents.mrosupply.com/product_documents/57/22/5722287/931-in009_-mu-e_C0PZ8Io.pdf)
- [Installation Instructions](https://documents.mrosupply.com/product_documents/57/38/5738334/856t-in001_-en-e_X7XLAHc.pdf)
- [Specifications](https://documents.mrosupply.com/product_documents/57/00/5700037/855-td001_-en-p_wNKPqGo.pdf)

## Product's reviews:
- Fast delivery! - I was in a pinch with a project dateline around the corner. MRO was able to get me what I needed before the due date!
Saved by MRO!
- Exellant - same as described, delivered on time.
thank you
- Easy and quick - Thanks.
- Pressure switch - Very easy web site. I ordered my part and got in quick. My customer was happy.