外表长得一样,但里面不一样 7 M+ g* \" L$ u6 P+ R; B9 l) G1 a
one stage T-STAT has "w" wire terminal' \6 T9 S, D/ u6 l
two stage T-STAT has "w1" and "w2" wire terminal8 D( G, w$ a: u
/ E E2 g1 d5 x, H$ \. S $ L ^' p7 j+ K7 ^more question ,please call me 7809526512 huang