| Number | Firmware | Software | Connect Internet | Tokens | Token Reset Button |
| SE137 | V5.017 | V2.47 | Yes, can connect internet | No tokens limitation | Yes, with token reset button |
| SE137-B | V5.017 | V2.47 | Yes, can connect internet | No tokens limitation | No need token reset button |
| SE137-C | V5.017 | V2.47 | Yes, can connect internet | No tokens limitation | No need token reset button |
| SE137-C1 | V5.017 | V2.47 | Yes, can connect internet | No tokens limitation | No need token reset button |
| SE137-C2 | V5.017 | V2.47 | Yes, can connect internet | No Tokens limitation | No need token reset button |
| Same: All KESS V2 has the same function, unlimited tokens. Difference: Comes from different Factory, difference PCB Board. SE137-C SE137-C1 and SE137-C2 come from the same factory, SE137-C1 red board, SE137-C and SE137-C1 Green Board SE137 have token reset button, SE137-B, SE137-C, SE137-C1 no need token reset button already unlimited. How to Choose: SE137-C1, SE137-C2, SE137 good quality best hot selling, work stable, SE137-B good quality price cheap and also hot selling, if the budget is enough and like token reset button can choose SE137 |
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