Profile: Stone Technologies Inc. specializes in offering battery analyzers, remote monitoring and security system products. Our battery analyzer performs automated dynamic load tests on standard lead acid batteries commonly used in burglar alarm systems, fire alarm panels and emergency lighting systems. This product is microprocessor controlled. It is operated by connecting the battery to the tester and the correct amp hour test is selected. The STC-612 analyzer then displays the final battery condition as good, marginal or bad. This unit tests 6 and 12 volt batteries. The tester is enclosed in a rugged die-cast aluminum enclosure with a polycarbonate graphic overlay. It is designed for field or bench use. The STC 240 is a direct substitution for the caddx NX series keypads. It can be used stand alone or mixed with other standard keypads.