Dvb01 User: Manual

On page 16, the manual explains:

Many users return the DVB01 thinking it’s broken when they simply have the wrong version for their region’s broadcast standard (e.g., DVB-T2 vs DVB-C). dvb01 user manual

Relay closes above upper limit, opens below lower limit. In-Range: Relay closed between set upper and lower limits. Out-of-Range: Relay closed outside set limits. Programming and Setup On page 16, the manual explains: Many users

A recurring issue with DVB01 manuals is poor English translation. Examples from actual user reports: On page 16

Capable of monitoring DC voltages typically from 0V to 100V (actual range depends on configuration). Relay Output Capacity: DC: 0V–30V / 10A. AC: 0V–250V / 10A. Operating Modes (P-1 to P-5)