Siab siab of the elevator lub rooj kab hlau rhuav, ob npaug kev nyab xeeb!

1. Siv cov multi - theem theem infrared nce hom kom ntseeg tau tias ob qho tib si rhiab heev thiab ruaj khov

2. EMC kuaj cov qauv kev ua tau zoo tshaj plaws ntawm cov qauv kev sim ntsuas, xws li EFT cov chaw kuaj mob mem tes suav nrog L, N, PE hauv av terminals)

3. Txais cov software tsim kho thiab cov khoom siv tawv lim kom ua tiav kom ua tiav kev tawm tsam zoo

4. Ua tiav cov khoom lag luam: cov khoom lag luam uas ua raws li cov qauv tshiab European en81-20, sib xyaw ua ke} d thiab lwm yam khoom lag luam rau cov neeg siv khoom xaiv.