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Over 50 years in the industry, demonstrating reliability.
Serving customers across all 50 states.
Products designed for heavy-duty use.
30 Days Return Policy*
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Product Overview
Collision Sentry CLN-211 is a blind-corner warning system for warehouse intersections where forklifts and pedestrians may approach from different directions. It activates flashing red LED lights and an audible alert only when motion is detected on both sides of the corner.
Magnetic mounts attach the unit to pallet rack uprights and other metal surfaces. Optional Z-clips support wall or nonmagnetic mounting. The pre-set passive infrared sensors run on included standard D batteries, with a low-battery indicator and adjustable audio volume that can also be turned off.
Key Features
- Dual-side motion detection
- Flashing red LED warning
- Adjustable audible alert
- Magnetic mounting
- Included D-cell batteries
- Pre-set infrared sensors
Ideal For
Choose this product if you need:
- Blind warehouse corners
- Forklift and pedestrian intersections
- Magnetic mounting on rack uprights
- Warnings triggered by opposing traffic
Not Ideal For
Not ideal when an alert is required from motion on only one side of the corner.
Product Details
Review the product details below to confirm the detection method, alert settings, sensors, battery power and life, mounting method, and low-battery indicator.
Shared Product Details
| Brand | Sentry Pro |
| Model Number | CLN-211 |
| Detection | Motion on both sides of the corner |
| Alerts | Flashing red LEDs and adjustable sound |
| Sensors | Pre-set passive infrared |
| Power | Standard D batteries included |
| Normal Listed Battery Life | 2 to 3 years |
| Mounting | Magnetic; optional Z-clips for nonmagnetic surfaces |
| Indicator | Low-battery light |
Frequently Asked Questions
When does the warning activate?
The lights and sound activate when motion is detected on both sides of the corner.
How is the unit mounted?
It mounts magnetically to metal surfaces, or optional Z-clips can be used elsewhere.
Are batteries included?
Yes. The unit runs on included standard D batteries.
Return Policy
You can return unused or defective products up to 30 days from the date of order. Some product returns may be subject to restocking fees. Proof of Purchase will be required if we cannot verify your order information. Unless the product is defective or damaged in transit, the customer is responsible for return shipment costs.
Defective or Damaged Products
All shipments received must be immediately inspected for damage. If your order shipped on a freight carrier, any damage needs to be noted on the Freight Receipt before signing for the delivery. An exchange or refund will be provided at no additional cost. If damage is due to misuse or regular wear of the product, the return will be denied.
Order Cancellation
If you need to cancel your order for any reason, please contact us immediately. If the order is canceled prior to shipping, you will be refunded in full. Certain products that are manufactured to order cannot be canceled after the manufacturing process has started.