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3199 |
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| A high sensitivity ultrasonic transmitter and receiver, sold only in pairs, for sending and receiving ultrasonic sound through the air, either as a continuous wave or pulses. Applications include burglar alarm systems, proximity switches, liquid level meters, anti-collision devices, counters for moving objects, TV remote control systems etc. |
| Sensitivity (dB) |
17▒6* |
-56▒6† |
| Resonant freq. (kHz) |
40▒1 |
40▒1 |
Impedance ( ) approx |
200 |
70k |
| Capacitance (pF) ▒20% |
1400 |
1400 |
| Pulse rise time (msec) |
2 |
0· 5 |
| † 0dB = 1V/╡Bar with 47k shunt. |
| Overall size 15mm dia x 12mm deep (connecting pins protrude a further 9mm) Pins are 10mm apart. |
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