... resistance: 430±5%ohm5. Velocity ratio 10:1,20:1,80:1,100:1,200:1,400:1,800:1,1000:16. Working frequency 6Hz7. Step motor ... 8,Specifications(quantity of character wheel): 5+1(five integers with one decimal);6+1(six integers with one decimal); 9. ... Error-free working period (≥10years) 13. Base frame material:(1.aluminum alloy base frame: ; 2.plastic base frame:PC)Remarker: non-reversible version: it ...