SF-250F Door Selector
SKU: 93980635988

SF-250F Door Selector

Sale price$43.96 Regular price$48.84
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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Description

SF-250F Door SelectorSF 250F Door Selector SSS The SF 250F Door Selector is Designed to be fitted to a set of rebated doors, the idea is to slow one leaf down to allow the right leaf to sit in the frame before the other leaf, this is to ensure that the pair of doors close correctly. Function: In the event of fire where the emergency exit consists of double swinging doors, the fuses on both sides will blow and the door closer will operate to close the door. However, there

SF-250F Door Selector SSS

The SF-250F Door Selector is Designed to be fitted to a set of rebated doors, the idea is to slow one leaf down to
allow the right leaf to sit in the frame before the other leaf, this is to ensure that the pair of doors close correctly.

 

Function:

In the event of fire where the emergency exit consists of double swinging doors, the fuses on both sides will blow and the door closer will operate to close the door. However, there is a set order in which the two doors must close and it is the 28934 door selector which regulates this order. In the case of a fire breaking out, even if the door which should close afterwards, begins to close first , it will be held back by the regulator until the other door has closed. Then, the lever of the regulator will disengage, permitting the remaining door to close, and thus the function of the fire door will be completely fulfilled. For double swinging fire doors, this closing order regulator is an indispensable device for use in conjunction with a door closer fitted with a temperature sensitive fuse.

 

Application:
When the door which should close first starts to close in second position, the meeting plates on the head of the door will move ahead while pushing down the sides of the lever, and in response, the hold on the door to close in second position will be released and this door will follow in the wake of the first door, embracing the lever as it closes. Thus, even when the closing order is initially reversed, the closing order regulator will ensure that closing of the doors takes place in the fixed order.

 

 

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 93980635988

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4.1 ★★★★★
Based on 466 reviews
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Liliana
Massapequa, US
★★★★★ 5
Great quality!
Style: Dual Dash Cam Without Card
I’m really impressed with this dash cam! The video quality is super clear both during the day and at night — you can see details perfectly. The dual camera captures both the road and the inside of the car, which gives me extra peace of mind. Setup was very easy, and the screen is bright and easy to navigate. The wide-angle lens covers a lot of area, and the loop recording and G-sensor features work flawlessly. Great value for the price — definitely recommend this one!
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Reviewed in the United States on October 18, 2025
A
Verified Purchase
Amazon Customer
Grantham, US
★★★★★ 4
That you have video of what happenes in corn and back
Style: Dual Dash Cam Without Card
Good no problems does it’s job
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Reviewed in the United States on May 11, 2026
B
Verified Purchase
BlinReflex-YouTube Tech Reviews
Lake Worth, US
★★★★★ 1
Spend a little more, this ain't it chief.
Style: Dual Dash Cam Without Card
Cheapest I could find with supposed " solid functionality and features. " You'll be much better off spending 10$ or $20 more to get readable license plates and a dash cam that doesn't break after 2 days. Unit started flashing the forward facing camera image constantly but still displayed the rear camera. Either a bad unit or overall bad engineering. Not worth risking it on another unit for me. Insulation was easy, night vision wasn't very good at all, pretty standard using it, similar to other cheap dash cams with a much shorter life.
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Reviewed in the United States on April 13, 2026
J
Verified Purchase
Julie Daligney
New York, US
★★★★★ 5
Easy set up
Style: Dual Dash Cam Without Card
It’s not great quality, but it does the trick for filming any bad drivers that try to con you in an accident and you need evidence. You get what you pay for, but I feel much more at ease driving with this thing recording.
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Reviewed in the United States on May 16, 2026
A
Verified Purchase
Arianna
Belleville, US
★★★★★ 5
good camera
Style: Dual Dash Cam Without Card
I'm in love with this camera! I've wanted to put one in my car for a long time for my safety, and I absolutely love this one. It's very easy to install, the setup was simple, and the video quality is excellent; everything looks sharp, both during the day and at night. The camera is small, but you can remove the micro SD card and put it in your computer, and everything looks perfect. I feel much calmer and safer driving knowing that everything is being recorded.
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Reviewed in the United States on December 16, 2025

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