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Using electromagnetism
Features: 1
This Magnetic sensor window door alarm loud enough to detects entry
Manage key cards freely
Night Vision
Delay Monostable Switch Module 12V Automatic School Bell Controller Using electromagnetismTiming from microseconds to long hours. Simple circuit design. Precision Pulse Generation Timing. Adjustable Duty Cycle. Monostable Operation. Supply Voltage (V): 12 Adjustable Time(s): 0 to 10 AC Control Voltage(V): 0 250 @max. 10A DC Control Voltage(V): 0 30 @max. 10A
