--- product_id: 145506002 title: "Morris Products Roller Ball Door Contact – Make & Break Circuit – 48 Contact Volts, 1.27 Hole Spacing – For Security, Alarm Systems & Opening, Closing Low Voltage Circuits, Switching Applications" brand: "morris products" price: "106.41 DT" currency: TND in_stock: true reviews_count: 9 url: https://www.desertcart.tn/products/145506002-morris-products-roller-ball-door-contact-make-and-break-circuit store_origin: TN region: Tunisia --- # Morris Products Roller Ball Door Contact – Make & Break Circuit – 48 Contact Volts, 1.27 Hole Spacing – For Security, Alarm Systems & Opening, Closing Low Voltage Circuits, Switching Applications **Brand:** morris products **Price:** 106.41 DT **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Morris Products Roller Ball Door Contact – Make & Break Circuit – 48 Contact Volts, 1.27 Hole Spacing – For Security, Alarm Systems & Opening, Closing Low Voltage Circuits, Switching Applications by morris products - **How much does it cost?** 106.41 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/145506002-morris-products-roller-ball-door-contact-make-and-break-circuit) ## Best For - morris products enthusiasts ## Why This Product - Trusted morris products brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Size:Make & Break Circuit Type Morris Products Roller Ball Door Contact​Maximize the technology used in residential or commercial facilities with this roller ball door contact from Morris Products. This electrical unit with options that include open circuit on, open circuit off and make and break circuits includes two wood screws for simplified installation. The closed plastic housing is durable and resistant to dust or corrosion and is compatible with time-activated switches.Suitable for security and alarm systems, this roller ball door contact also offers solutions for doors, windows, bells and buzzers. The unit signals circuits and general low-voltage switching applications when a window or door is opened. These roller ball door contacts from Morris Products are available with 12, 24 and 48 volts, 1-2 AC Amps and 0.5, 1 and 2 DC Amps.Morris Products is a premium manufacturer of lighting and electrical products that include meters and testers, organizational devices, power connectors and tools. Established in 1994, Morris Products is headquartered in Queensboro, New York.Features:- 48 Volts AC Max- Includes 2 Wood Screws- Used with Doors, Windows, Bells and Buzzers- 12, 24 or 48 Volts- 1-2 AC Amp Options- 0.5, 1 and 2 DC Amp OptionsPackage Includes:- 1 x Roller Ball Door ContactScroll up & click 'ADD TO CART' to get yours ## Features - About this item - USED WITH DOORS, WINDOWS, BELLS AND BUZZERS: This roller ball door contact from Morris Products is suitable for security and alarm systems as well as doors, windows, bells and buzzers to signal circuits and general low voltage switching applications. - LIGHT OR ALARM ACTIVATION: Easily open and close a low voltage circuit to activate a light or alarm when a door or window is opened with this roller ball door contact for low voltage is installed. - DURABLE CONSTRUCTION: Featuring a closed plastic housing, this roller ball door contact is resistant to dust and corrosion and works with time-activated switches. - VERSATILE UNIT: Choose from roller ball door contact models that feature open circuit on, open circuit off and make and break circuit types. These roller ball door contacts from Morris Products are available with 12, 24 and 48 volts, 1-2 AC Amps and 0.5, 1 and 2 DC Amps. - COLLECTION OF COMPREHENSIVE ELECTRICAL TOOLS: Morris Products is proud to feature a variety of electrical tools and applications that range from wire connectors and non-insulated ferrule to nylon cable ties and cable splicers. ## Images ![Morris Products Roller Ball Door Contact – Make & Break Circuit – 48 Contact Volts, 1.27 Hole Spacing – For Security, Alarm Systems & Opening, Closing Low Voltage Circuits, Switching Applications - Image 1](https://images-na.ssl-images-amazon.com/images/I/61m3Zf4gLFL.jpg) ![Morris Products Roller Ball Door Contact – Make & Break Circuit – 48 Contact Volts, 1.27 Hole Spacing – For Security, Alarm Systems & Opening, Closing Low Voltage Circuits, Switching Applications - Image 2](https://images-na.ssl-images-amazon.com/images/I/61tdVbbeDUL.jpg) ![Morris Products Roller Ball Door Contact – Make & Break Circuit – 48 Contact Volts, 1.27 Hole Spacing – For Security, Alarm Systems & Opening, Closing Low Voltage Circuits, Switching Applications - Image 3](https://images-na.ssl-images-amazon.com/images/I/61iSAEOt4gL.jpg) ![Morris Products Roller Ball Door Contact – Make & Break Circuit – 48 Contact Volts, 1.27 Hole Spacing – For Security, Alarm Systems & Opening, Closing Low Voltage Circuits, Switching Applications - Image 4](https://images-na.ssl-images-amazon.com/images/I/61nAB1A%2BMfL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐ Think I know why some have an issue *by J***. on Reviewed in the United States on July 13, 2019* UPDATE: Just wanted to confirm this switch is still working well. It was installed in an RV to turn on LED lights in an pantry. So no frequent use like in a home.----------I tested this switch as soon as I got it and it worked perfectly. Then a couple hours later after initial install I tested again and it didn't work. After a couple minutes of playing with it I realized that that metal contact plates under the screws go in only ONE way AND they have to be aligned properly to make the correct contact and complete the circuit. These small plates have a "tab" section - a portion of the plate that is wider - and can easily get out of alignment when trying to hold the wire and tighten the screw.I consider this a design flaw. Things that can only go in ONE way should NOT move around so easily. That's why lowered to 4 stars.BTW, if you are having trouble with which switch to get, read the description like this "Door Open-Circuit On" = Normally Closed or "Door Open-Circuit Off" = Normally Open.Oh and a 3/4 inch spade bit was a perfect fit. I actually wallowed out the hole a little to give a looser fit (easier to pull out) and allow for flush fit because the hole wasn't perfectly perpendicular with the door jamb. ### ⭐⭐ Confusing nomenclature and bad design *by A***R on Reviewed in the United States on July 23, 2020* Okay, first things first, because it seems like even in Q&A section there is no clear answer as to which version is which.- "Open Circuit On" is NC (Normally Closed)- "Open Circuit Off" is NO (Normally Open)I have no idea why they can't use this common nomenclature.Now, the real problem is their design for how the contacts engage/disengage. I think it is unnecessarily complicated. As a result of that, for the NC switch you have to push the ball almost all the way in for the circuit to break (open). This basically means that your door, window, or wherever you install this roller switch will have to rub against the front plate of this switch to make sure it pushes the ball all the way in and properly breaks the circuit. As opposed to simple button-style NC switches, where even light touch disengages the contacts and breaks the circuit. I'm attaching the simple schematics how typical NC switch operates, so that you can see how even slightest push of the button would disengage the contacts. So be aware that this switch is not it... ### ⭐⭐⭐⭐⭐ Great little low voltage door jam switch *by A***. on Reviewed in the United States on November 7, 2020* Great little low voltage door jam switch. I used it to turn on a closet light when the door is opened. If the light is 110VAC you will need a relay to switch the AC line voltage like Amprobe RC-120S Closet-Type Remcon Relay Switch available on Amazon. The relay is kind of pricy and it is supposed to be installed in a metal box to provide additional heat dissipation, although if you are using a low wattage LED closet light like I did at 15W or around 0.15A the relay is rated at 6.5A so it should never be stressed and you probably could get away without the metal box, but used one to be safe, since I wanted it to last 20 years without needing further attention. A little extra effort and cost up front is preferable to trouble later. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/145506002-morris-products-roller-ball-door-contact-make-and-break-circuit](https://www.desertcart.tn/products/145506002-morris-products-roller-ball-door-contact-make-and-break-circuit) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-01*