Pros
The company is often located in some nice areas, although that of course depends on exactly where you work. Emerson is a big, international company, so there will be opportunities for advancement across the company if you pursue them hard enough. Emerson is a very stable company and in general conservative, so you probably don't have to worry about volatility in the market nearly as much.
Cons
The pay seems to be at the low end of the range for companies in general. I think you end up trading stability for compensation. As a consequence, Emerson doesn't attract the cream of the crop in terms of employees. That doesn't mean some great people don't work at Emerson, but it's a consideration. The product lines also aren't that exciting. In this case, you trade stability for excitement.