EMKO ERM 3770 TACHOMETEREMKO ERM 3770 TACHOMETER/REVOLUTIONEMKO ERM 3770 77 x 35 DIN SizeEMKO Digital Tachometer- 4 Digits Display- Adjustable decimal point- Division rate- NPN or PNP input type- Working with Process Set and Alarm Set value- Alarm outputRelay or SSR driver output (It must be determined in order.)- Alarm Set value boundary- 0,07Hz to 10000Hz input signal- Automatic sampling (1 sec. to 16 sec.)- Programming mode password protection more details: http://www.siampowershop.com , [email protected]อ่านเพิ่มเติม