Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: Can you turn it off by rotating the pointer backward? One reviewer says yes.
Document: The timers work ok, but cannot be manually turned backward to reduce the time or turn off the timer. It is a shortcoming that should have been explained in the advertisement since many timers can be turned back or off.
I had a hard time finding a bathroom timer in any stores near me. I found this one on Amazon and it was just what I needed. It is made high quality and was easy to install. The only drawback is that it can be hard to shut it off by hand but I don't need to do that all that often so just let it turn off automatically like it is made to do and it's fine.
I have been using this timer for about 5 years and just purchased 3 more at the request of neighbors who wanted one for their apartments. Mine is used to time the hot water heater for my daily shower and has more than paid for itself in savings on the electricity bill. Previously it was necessary to manually turn on and off the heater and invariably  it remained on longer than necessary, to the detriment of my electricity bill.
I was looking for a timer to extend the run time of my bathroom vent fan to cut down on the humidity. This timer, a one hour setting, works great. I just set it to an hour when i get up, shave, shower and head out, the timer takes care of the rest. Installation was easy, just like a regular light switch, and of course turn off circuit breaker to install.
I am a remodeling contractor and  I consider these to be standard equipment for controlling the bath exhaust fans. I have been using them for years and have never had a problem. One reason people have moisture problems like mildew in baths is the don't want to leave the fan on and turn it off as soon as they are done showering. And then there are those pesky odors found in the bath..... Leaving the fan on for 15 or more minutes can help with both problems!
I had installed these in each bathroom in old house. Wired in to replace single pole switch & it worked right out of the box. Also could turn backwards to turn off. But I can not find at Lowes or Home Depot. They only have the ones that are a single light switch replacement. I want this because each bathroom has 2 light switches (one for light and one for fan) in each wall plate.Thanks Amazon for having them available - I just ordered 3 for my new house.
Yes, this product was really made in Tunisia. See picture. I'm not saying there's a relationship, but the product does not work. As another customer found, the timer is unreliable. In the case of the timer I ordered, it was reliably dead. How can a simple spring mechanism fail before first use? Beats me.Strangely, there is no option (or location) to connect this unit to a ground wire.
i put this timer in my bathroom, just turn the knob and your electric wall heater is up and running.
great price and the also ways get the job done. Just turn the dial and you are up and running
Timer prevents extended run times of bathroom fan which people frequently forget to turn off. These timers are now in all 4 of our restrooms.
Answer: Yes, you can, with no damage to the unit.  I've installed many of these over the years and have two in my own home.  They are rather "bulletproof".