1. Kev nyab xeeb: Cov teeb hluav taws xob tsawg feem ntau yog 12V / 24 / 36V, txhua yam muaj kev nyab xeeb rau tib neeg lub cev kom tiv taus qhov hluav taws xob. Lawv tau siv rau hauv cov chaw uas yuav tsum tau ua los ntawm cov qauv hauv tebchaws lossis cov chaw uas muaj kev nyab xeeb siab.
2. Lub neej ntev: Vim tias lub voj voog yog DC tsis tshua muaj hluav taws xob, cov khoom siv tsawg dua thiab lub neej ntev dua.
3. Tsis muaj stroboscopic. Txij li thaum DC voltage siv, qhov tshwm sim stroboscopic hauv AC siv yog zam.
4. Me me: Lub ntim tuaj yeem ua kom me me raws li qhov ua tau vim nws tsis tas yuav tsum muaj cov txheej txheem nyuaj.
Disadvantages: Nws yuav tsum tau txuas mus rau qhov tsis tshua muaj hluav taws xob thiab tsis zoo nrog cov khoom siv 220V.
