E840-TTL(EC05-DNE) 4G Cat.1 module [Working voltage]:DC 4.5~18V [Data interface]:TTL level [Product size]:25*25mm [Product weight]:4.3±0.2g [Introduction]:E840-TTL (EC05-DNE) is a small-sized 4G TTL pin module developed by Ebyte using 4G CAT1 technology...