[MightyQuinn]

I have 2 controllers with switches on them.  

Anyone have an idea what switches stand for ?

[MightyQuinn]

What type of cars are they good for?  Ohms  ?

[KensRedZed]

Hello MightyQuinn,

The controller on the right looks a bit like a Professor Motor version. I've also seen an upgraded version with a throttle and brake potentiometer.

Controllers can be offered in all sorts of different Ohm values. Depends on intended track voltage, etc.

Did you buy them used? Do they show brand name anywhere?

Ken

[MightyQuinn]

the one on the left I found by searching the internet, not getting much info as it doesnt look exactly like the images that showed up is a Parma Omni and the other has Slotworks on it.  ⁠I have another of the one on the right but doesnt have the switch. As I have various controllers with alligator clips (25,35,60 Ohms) and 2 Tomy (90,120) I was looking to identify these 2 to see if they had different levels before purchasing 2 controllers with alligator clips I saw on ebay that has switch for 35,45,55 (DS) & and other has a switch for 60,90,120 (DS). Trying to cover all my bases on all the different HO's I have. My Difalco which I use for 1/24,1/32 is to touchy for most of my HO's. I bought the left one new YEARS ago and given the one of the right.

Is there a way to test what the ohms are ?

[Nonfractal]

Is there a way to test what the ohms are ?

To test the resistance of the throttle, use an AVO meter set to "resistance" or "ohms"
Put meter leads on the two of the controller's  leads. 
(For club bscra "bs546" plugs this is the two lower pins typically the white and black leads, not the red centre pin) 

The meter should show an infinite resistance (open circuit) "OL" on digital meters
Squeeze the trigger slightly until  you get a reading)
The meter should then display the resistance of the unit. 
As you squeeze the trigger fully, the meter sweeps from its max resistance to zero ohms (for full throttle)

Alan