TTL modulation means you can switch the device (laser) on & off by applying either 5V or 0V to an input pin (actually everything above 2.0V is "on", everything below 0.8V is "off", the range in between is "forbidden" and should only be applied for nanoseconds while going from one logic value to the other). This is opposed to "analog modulation" where the output intensity would be proportional to the voltage applied to the modulation pin.
A RGB can only do a simple mix of R on or off B on or off and G on or off--as in what 3 on/off would accomplish. So output can only be full power ---RGB, R with G , R with B, G with Blue, R, G, or B.
TTL can be pulsed on and off -- the speed of the turn on/off cycle is usually at least 20 KHz in most of the professional units can reach easily 35/40 KHz, and in telecommunication modules you can drive them at MHz range. Alot of the laser modules(especially the cheaper ones) won't handle fast switching . You should find a laser module with a TTL input which can handle the frequencies that you need.
RGB with TTL= seven colors
RGB with analog >thousands of colors
"TTL stands for “Transistor-Transistor Logic,” and is another way to say that the laser diode modulates digitally, and it’s always either 100% on or 100% off, never anywhere in the middle. TTL laser diodes are generally cheaper, and in some situations can appear brighter than a system of analog-modulated laser diodes with the same peak power level. TTL laser diodes are usually used in lower-cost, entry-level systems where maximum brightness is required at all times and you don’t need a wide color palette. An RGB laser projector system with TTL modulation can only make 7 color combinations; red, green, blue, yellow, cyan, magenta and white.
Analog modulation means that the laser diodes can do more than just turn to 100% on or 100% off, and can emit laser at a large range of power levels. Analog-modulating diodes are the industry standard for galvanometer-based projectors, and while costing a little more than TTL diodes, analog diodes offer a much wider color palette than TTL systems. Analog modulation also allows you to fade the laser beams in and out, which gives you a lot more creative control for your show programming. Analog systems can create anywhere from dozens to thousands of possible colors, depending on the specifications of the system.
A laser is said to be “seven-color,” its diodes are TTL, and analog diodes usually go with lasers said to have “1,000+ colors.” For example, our Caliente Aurora’s diodes are TTL, and our Skywriter HPX has analog diodes."
From :
What?s the difference between TTL and analog laser color control? | X-Laser®
Here is the O-like 500mW version $115 see:
500mW RGB white laser module/laser light module/TTL modulation [OL-RGB-400] - $115.00 : Zen Cart!, The Art of E-commerce
+5 VDC on the TTL input. Some turn off with voltage present. I'd ask the seller to provide the info, if they can't find another seller who sells it and ask.
Agree ask the seller or get a new seller.
Nobody is going to bother much with cheap low end quality RGB modules with so-so or poor alignment except as a curiosity/novelty product.
Minimum pretty good/decent quality RGB module is an OPT Lasers, 400mW mini module at $399
see:
https://optlasers.com/en/28-rgb-modules