EVERYTHING FOR PLANES AND PILOTS SINCE 1965 | 877-4-SPRUCE

MS25041 PRESS-TO-TEST INDICATOR

Select Color:
ClearGreenBlueRedAmber
Quantity
Add to Wishlist

Overview

Miniature press-to-test indicator with built-in bulb testing device. Adjustable dimmer. Uses #330 (12V) or #327 (24V) bulb. Bulbs NOT included, order separately.

Part numbers for replacement bulbs are 11-04016 (GE-330) and 11-04015 (GE-327). See "Accessories" tab to purchase.

Reference Chart

Description
Part No.
Press-To-Test MS25041-1 Clear
11-04226
Press-To-Test MS25041-3 Green
11-03911
Press-To-Test MS25041-10 Blue
11-04227
Press-To-Test MS25041-2 Red
11-03910
Press-To-Test MS25041-4 Amber
11-03912

Documents

  • Accessories
  • Customers Also Viewed
  • Frequently Purchased With

Reviews

perfect

John E
August 24, 2020

They are very well done and They work.

Mauricio F
June 13, 2020

Used this as my ads-b ‘fail’ light. Worked out great

Brian
April 30, 2020

Merry
April 18, 2019

Fast shipping, easy order placement, thanks!

Debra
March 23, 2017

The press to test light came without a bulb in it’ How disappointing!

Dan E
November 25, 2019

I was surprised to find that the dimming of the bulb is accomplished by a shutter, similar to what controls the amount of light coming through a camera lens and not electrically controlled. Not bad just different. Not installed yet. Just bench tested.

Rich
April 12, 2018

As expected... would have been nice if they would include wiring diagram..

Mark
April 25, 2019

Good quality, a bit over priced. Do not forget to order the bulb sold seperatly!

Mike K
March 8, 2018

Q&A

Q: It says miniature but does not mention a size. What is mounting hole size and diameter of light?

The mounting hole should be approx 15/32", and the lens is .650".

Q: What are the part numbers for the bulbs?

Part numbers for replacement bulbs are 11-04016 (GE-330) and 11-04015 (GE-327). See "Accessories" tab to purchase.

Q: There are 3 prongs on the back of Press to test indicator. Which tab is used for which?

There are three prongs labeled labled 1, 2 and 3. When hooked up, 1 is ground, 1 & 3 is on and 1 & 2 is off.

Q: Which 2 prongs on the MS25041 indicators are used for push to test function? 1&2 or 1&3?

We have added a drawing to the 'Documents' tab of this web page. Please review the details by downloading the PDF.

Q: Can the MS25041 press-to-test indicator lights be used in certified aircraft?

Yes, these are MIL spec units and can be used in certified aircraft per the manufacturer.

View in Catalog

View Image View in Catalog