Monitors / Controllers OVERVIEW

Electronic Sensors, Inc. (ESI) provides Level Devil ® American-made tank monitors, for local or remote tank monitoring — including some of the industry’s most popular sensor controller units. We have systems for single-tank or multi-tank installations (and most of our multi-tank controllers are also available in lower-cost single-tank versions).

Remote monitoring is available via cellular, landline, satellite, Ethernet, or serial/RS-232 communications — reaching your cellphone, smartphone or computer from virtually anywhere (using solar, battery or AC power). Local displays and alarms are also available, and relay boxes extend the functions possible for our monitor/controller units, allowing them to be programmed to control switches, pumps, relays and other devices.

Select the units you want from our current line of monitor/controller units
(click on the model name or number for details).

		ESI / Level Devil ® Tank Monitors / Controllers
	Model Number		9035A	9225	9032A	9023A	9175	9230	9172
	Model Name		Tank Monitor II	Lil’ Devil II	Tank Reporter II	Tank Teller II	The Stack	Short Stack	Penta Comm
	TANKS (max.)		1	5	6	99	99	2	5
LOCAL MONITORING / CONTROL:
	Display		YES	YES	YES	YES	Opt.	–	Opt.
	Alarm (Relay)		Opt.	–	Opt.	Opt.	Opt.	–	Opt.
REMOTE MONITORING / COMMUNICATIONS:
	Cellular		–	YES	–	–	Opt.	YES	–
	Landline		Opt.	–	Opt.	Opt.	Opt.	–	–
	Satellite		Opt.	–	Opt.	Opt.	–	–	YES
	WiFi / Local RF		Opt.	–	Opt.	Opt.	Opt.	–	–
	Ethernet		Opt.	–	Opt.	Opt.	Opt.	–	–
	Serial Wire / RS-232		Opt.	–	Opt.	Opt.	Opt.	–	–
POWER SUPPLY:
	Battery		–	–	–	–	Opt.	YES	YES *
	Solar		–	–	–	–	Opt.	Opt.	Opt. *
	AC		YES	YES	YES	YES	Opt.	Opt.	Opt. *
* For the 9172 PentaComm: in addition to the standard battery, solar or AC power is required.

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