@kda0000 Hello, 

Model EP10 is only sold in certain area & online channels.  It has the same software functions as HS103 / HS105 but differentiate in  appearance. 

HS103 V1& V2 supports Max Load 10Amps.

Personally it is recommended to choose the cheapest model according to price in local/ online stores. 

@Solla-topee 

What about the HS-103V5?

Solla-topee wrote

@kda0000 Hello, 

Model EP10 is only sold in certain area & online channels.  It has the same software functions as HS103 / HS105 but differentiate in  appearance. 

HS103 V1& V2 supports Max Load 10Amps.

Personally it is recommended to choose the cheapest model according to price in local/ online stores. 

@Doug-in-S.D.CA 

I ordered some of the EP10 and the HS103 units on Amazon - they both advertise as 15A. They arrived and all the markings on both in terms of amp ratings and everything are identical. Similarly, when I loaded them up, they worked identically with all the same functions and everything. Couple differences I'd mention are as follows:

1. The EP10 are nearly identical in length and height as the HS103, but are more shallow, so they stick out from the wall slightly less.

2. The EP10 appear to actually have a body that can come apart because they have a single screw in them on the back, whereas there are no screws on the HS103. I wouldn't recommend taking either apart, and I'm not sure why you would, but it's a difference I noticed. 

3. The light on the EP10 is only on the side button, which is fairly small, and sorta recessed, whereas the lights on the HS103 are both on the button and on the edge lit portion on the end too (take a look and you'll see what I mean.)  Which you prefer will probably be preference. If you like being able to see the light indicating on / off while looking at it dead on, the HS103 does that. If you prefer not to see the light that way and/or you want as little light as possible when you turn the lights out, the EP10 would be what you want. 

4. I got the 4 packs of both to compare, and the EP10 came in a smaller box, as you'd expect. The EP10 box was in a more classic electronics packaging with the glossy plastic-like finish and color pictures / printing on it. The HS103 came in what seemed to be more environmentally friendly packaging because it had no painted glossy finish and color printing / pictures; instead it just the cardboard with black printing. Internally the packing was very similar.

5. After both being left on for a day without anything plugged into them, they were both warm, but not hot. Neither were noticably warmer than the other. 

That's really all I can think of, so the tl;dr is that these are essentially identical units besides the size and lights.