pH Controller Comparison?

[jbadd99]

Can anyone tell me what the real difference between the Milwaukee SMS 120 and SMS 122 is?

According to the product documentation I read, they appear identical. If that's the case, why should I spend the extra $20 to pick up the SMS 122 as opposed to just buying the SMS 120 to run my Calcium Reactor?

 

[lilrobb]

The 120 is a monitor, the 122 a controller...

 

[acroholic]

LilRobb;747374 wrote: The 120 is a monitor, the 122 a controller...

Robb's right. The 122 comes with a three prong plug/reptacle wired into it that energizes on/off according to the setpoint you choose for the controller. Used them for years and have found them to be very reliable.

 

[jbadd99]

I guess I'm in the market for a 122 then. I hate being broke all the time.