Las Vegas, NV (April 5, 2006) – Dortronics Systems Inc. is showcasing custom designed door entry solutions at this year’s ISCW. Among the many solutions offered is the 7201 Series High Intensity ...
Recently, Dortronics received a request to design and manufacture an indicator that could be mounted near card readers to clearly indicate when individual doors were open or locked. The problem arose ...
A LED flashing briefly once every 5 seconds to imitate the indicator of a real alarm is the function of this dummy alarm project with the use of a 7555 timer IC. To prolong battery life, the circuit ...
The QRM Series, rear-mounting LED indicators from APEM Inc. is suitable for a wide range of applications, from heavy machinery to military devices, and the QRM-NV series, including night vision (NVIS) ...
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