Philmore B820 Hi/Lo Piezo Sounder 3-20VDC 105dB @ 20V

High/low tone DC piezo sounder , with circuitry
Loud sounders that may be powered with a voltage of anywhere from 3.0 to 20Vdc. Output minimum 95db at minimum voltage; 105db at 20 volts. Sound frequency is 2.8Khz µ0.5Khz. Typical current draw is 6mA @ 6V DC; 10mA at max. voltage. ABS case meets UL94HB, lead wires are UL listed materials. No other circuitry is needed, just DC voltage. Mounting ears are on centers of 50mm, case diameter is 42mm O.D.. Available with continuous tone, on/off tone and with hi/lo dual tone
Brand name(s) : LKG, Philmore