... .8V~4V) linear outputRS-485Individual address setting(optional)MAX232Records for 365 days available to check(optional) 4-20mA OutsideProtection ... communication rate 9600,14400,19200 (default),28800,38400 bps (programmable set), 15KV ESD protection, 8 separate address, the maximum number ... ; humidity low-alarm, high-alarm).2.9 Clock support for user set, and with a button battery, power-down without re ...