There's one more factor to consider.

Intermatic is an American brand. In fact, it's an American company. Even better, it's a family-owned American company, which means it's more likely to retain values such as corporate integrity and pride-of-product, than publicly held companies.

But, as best I can tell, it consists of three product lines:
1. Intermatic electromechanical timers and controls, plus a few Intermatic electronic controls.
2. Grasslin (a purchased German product line) electronic controls.
3. Electronic controllers like the P series units like the one you asked about.

The Intermatic time clocks are not elegant, but they've been around for years and -- I can assure from my own observations -- they RUN for years and years.

I have no personal experience with the Grasslin products, but they've been around for years, and give the appearance (and had the pricing!) of highly engineered and carefully manufactured German products.

And, then there are the others.

I don't know for sure, but they look to me like Chinese designed and Chinese made, but Intermatic labeled products.

Now, I'm typing this on a Microsoft wireless keyboard -- made in China -- using Microsoft wireless mouse -- made in China -- and using a PC with a case -- made in China and numerous PC components, all made in China. So, I need to show some respect. But my experience has been that American-engineered, Chinese-made, products can be very high quality, like the iPhone and the iPad. But my experience has also been that Chinese-engineered, and Chinese-made products are absolutely untrustworthy. The fact that Intermatic can't be bothered to get the schematics right, makes me suspect that they've also cut corners on the laborious and expensive import inspections AND on-site production inspections required to get high quality product from China.

Bottom line?

The P1353ME will probably work, but I wouldn't be willing to trust it enough to quite a job locally using it; I'd be too afraid I'd end up taking the hit for Chinese 'we-cut-every-corner-we-can' design and production.