ISKRA X4-G2 integrates a pulse collector, a data logger and a GSM modem in a single unit. It can collect data from up to four volt-free pulse emitters. EX X4-G2 is certified for use in the ATEX Zone 2 environment. The unit is battery powered and can operate up to 10 years.
HOWTO: Adding an ISKRA X4 to DEXCell Energy Manager