Electrotech Sales Group, LLC (ESG)
151 Discovery Drive #112; Colmar, PA 18915
Tel: (215) 997-8855; Fax: (800) 522-3868
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The Reign smart digital display operation:

When there is a bad condition an alarm relay is triggered. In addition to the relay action, the condition that is bad will flash on the display. For example: if the voltage is bad, the voltage display will flash and the other conditions will not flash. When something bad does happen, the power supply does not turn off, which prevents losing this data.
Data sheet
UL listed: file#
ESG welcomed Peter Schmid Chairman & CEO of Relecomat
He reviewed new products for the US market. They have made changes in manufacturing to offer competitive pricing in keeping with their high quality standards.

The SMS relay is being updated and will offer a fixed SIM card...lanches first quarter 2019.