Is this price for three track signals, or one with three lamps?

The price is for 3pcs track signals,and each signal with three-leds,green,yellow and red.

Can I individually change the colors of each lamp light?

If you literally mean change the Green light to other colors (& the others to other colors too) then NO (and why on Earth would you want to?). But I took your question to men Can I individually turn on & off each light? Then: Yes, there is a common wire lead (Black) & 3 individual leads (1 for each color G/Y/R) so, depending on how you connect them, you can have all 3 on at once (NOT prototypical) or any 2 or just one at a time. You could switch them manually with 3 SPST switches, all the way up to automatic signalling w/sophisticated electronics. These are well made, good looking & reasonably priced signals. I have found Evemodel products to be excellent values.

Will these leds light with 3.3v or 5v ? if not, would it be easy to swap out the leds for different ones?

I power all three lights with four AA batteries — I harvested a battery pack from a miniature LED strand. Also, I set up the light wiring with red the nearest to the batteries, yellow a little further away and green the furthest (hoping that resistance would help balance out the brightness of the three units). The AA batteries last a couple of months (when operated 24/7).

Jtd873gyr 3pcs Model Railroad Train Signals 3 Lights Block Signal

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€ 49.66

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Description

🚦 Signal your style with the ultimate HO scale train traffic lights—don’t let your layout run in the dark!

SCALE PERFECT 1 87 SIZE - Precisely crafted for HO scale layouts, ensuring realistic proportions and immersive dioramas.
BONUS RESISTORS INCLUDED - Free resistors for safe operation between 9-18V, so you’re ready to install right out of the box.
PLUG PLAY PREWIRED DESIGN - Comes prewired with black positive and color-coded negative leads for hassle-free installation.
UNIVERSAL 12 V COMPATIBILITY - Works seamlessly with both AC and DC 12V power sources, perfect for any model train setup.
VIBRANT 3 COLOR LED SIGNALS - Red, yellow, and green LEDs bring your HO scale layout to life with authentic railway traffic control.

The JTD873GYR 3PCS Model Railroad Train Signals set features three prewired LED block signals in red, yellow, and green, designed for HO scale (1:87) train layouts. Operating at 12V AC/DC with included resistors for safe voltage regulation, these compact plastic signals offer easy installation and authentic railway ambiance, making them an essential upgrade for any serious model railroader or diorama enthusiast.

Specifications

ASIN	B07FGFH57F
Customer Reviews	4.4 4.4 out of 5 stars (177)
Is Discontinued By Manufacturer	No
Item Weight	0.01 ounces
Item model number	JTD873GYR
Manufacturer	Evemodel
Manufacturer recommended age	14 years and up
Product Dimensions	3.7 x 2.5 x 0.3 inches

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