ST Robotics Workspace Sentry System Infrared Sensor Module for ST Robot Arm
Description
- ST Robotics Workspace Sentry System Infrared Sensor Module for ST Robot Arm
- Offers 3 infra-red beams
- Lets you have very sensitive torque limits
- Connects into the emergency stop circuit
- Each module has 3 beams range from 300 to 1.000 mm
- Can be used singly or 2 or 3 modules
The ST Robotics Workspace Sentry System Infrared Sensor Module for ST Robot Arm comprises a module with a 3 infra-red beams set at approx 30-degree angles.
The beam works by sending out an infra-red pulse and timing how long it takes to get back. Because the beam is a pulse it is independent of background heat.
The module connects into the emergency stop circuit of an ST robot controller. Breaking a beam has the same effect as pressing the stop button. The modules can be used singly or 2 or 3 modules may be daisy-chained.
This is far safer than a robot that stops on impact with a human being. The robot may have very sensitive torque limits but nevertheless there has to be a collision for the limit to the trip. If the user has a hand trapped between the robot and the bench the result could be serious.
It would also be serious if the robot were carrying something hazardous like a knife or hazardous fluid or if it were carrying something very expensive. In all those cases it is much better to stop the robot before a collision occurs.
Each module has 3 beams that can be individually adjusted for range from about 300 mm to 1.000 mm. An individual beam may be switched off if it is likely to be interrupted by something that is meant to be there.
- 1 x Workspace Sentry System Infrared Sensor Module for ST Robot Arm
- Beam Range: 300 to 1.000 mm
- Used singly or 2 or 3 modules: Yes
- Beam angle: Approx 30 degree
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Refund Policy
If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
This return policy also applies, as a minimum standard, to products sold and fulfilled by third-party vendors through the Marketplace.
Please review the Return Conditions, Return Exceptions and the process on How to Request a Return Authorisation (RA) before initiating a return request.
United Kingdom consumers exercising their statutory Right of Cancellation are subject to different conditions. See the Statutory Right of Cancellation.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at the Vendor's discretion. See the Warranty section.
Return Conditions
To qualify for a refund under the 30-day return policy, all of the following conditions must be met:
- A valid Return Authorisation (RA) number must be obtained prior to returning the product. Returns without an RA number will be refused.
- The RA number is valid for 30 days. The returned item must be received within that period.
- The RA number must be included with the return.
- Products must be returned in unused, unmodified condition (e.g., no scratches, alterations, missing parts, or signs of installation/use) and in their original packaging, suitable for resale.
- Shipping fees are non-refundable. Return shipping costs are the responsibility of the customer, except in cases of a product confirmed defective through RobotShop's troubleshooting process or of a verified shipping error by RobotShop.
- Refunds are processed within 7 days after receipt and inspection of the returned item.
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- A 20% restocking fee may apply to large-quantity returns of items ordered specifically for the customer from the manufacturer or not part of RobotShop's standard inventory.
Return Exceptions
The following products are not eligible for return or refund under this policy:
- Used, damaged, or modified products — Items that show signs of use, wear, or alteration, making them unsuitable for resale.
- Consumables * — Use and wear-and-tear components, altered or depleted through use (e.g., batteries, belts, brushes, gears, filament, tyres, disposable bags, lubricants, greases, waxes, etc.). Not eligible for return once opened or used.
- Perishables — Goods liable to deteriorate or expire rapidly. Not eligible for return.
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- Digital Goods, Software, and Apps * — Final sale only, due to licensing restrictions.
- Clearance Items * — Products identified as clearance or final sale, including end-of-life or discontinued items.
- Custom-made, personalized, or special-order items — Products manufactured, configured, adapted, or built to the customer's own specifications and requirements.
- On-Demand Items * — Standard catalogue products not stocked by RobotShop and ordered specifically to fulfil a customer request.
- Professional & Specialized Equipment — See the Professional & Specialized Equipment Warranty page and Professional & Institutional Buyers (B2B) section in the Terms & Conditions.
* United-Kingdom consumers retain their statutory Right of Cancellation on these items. Its exercise is subject to the conditions and exclusions set out in the Statutory Right of Cancellation, and any reimbursement may be reduced to reflect a loss in value resulting from handling beyond inspection.
How to Request a Return Authorisation (RA)
While the same return policy applies, these orders require a separate contact process for returns.
- RobotShop Fulfilled Orders → submit a support ticket from your account under My Support Tickets.
- Marketplace Vendor Orders → submit a ticket from your account under My Marketplace Tickets to contact the vendor directly.
Note: Marketplace vendor products are normally labelled with SKUs starting with RM, and identified on the product page with the mention "Sold and fulfilled by [Vendor Name]".


