Burglar Alarms

Warning Devices

Smoke Detectors

Alarm Signal Repeaters

General Purpose Noisemakers

Megaphone (electronic)

High Efficiency

High Intensity

Light Weight

Low Power Drain

Low Cost

 

Manufactured by Massa Products Corp

Description E-173H 

The Massa Model E-173H is a new high efficiency audio frequency transducer which, when used with the supplied folded horn and the customer's own electronics, offers the O.E.M. a low cost, very high intensity, multi-tone audible alarm generator. The unique folded horn, which is necessary for high-efficiency operation of the transducer, may be purchased with the transducer, or a portion of the horn design can be molded into the O.E.M.'s product such as into the front panel of a smoke detector or burglar alarm. The E-173H transducer, when driven with 70 volts RMS delivers a sound pressure of greater than 125 dB vs .0002 ubar at 1 foot in the frequency range 2.5 to 3.5 kHz.

Although primarily designed as a very efficient transmitting transducer, the E-173H can also be used as a sensitive receiver. It is ideally suited for applications requiring a combination listening device and an audible alarm generator in a compact package such as an audible alarm repeater for recognizing a weak signal from a smoke detector and repeating the signal as an intense alarm. It can also be used as an efficient high-intensity intrusion alarm signal. Consult Factory for special applications and for additional specifications.

Description E-194

The Model E- 194 is a high-intensity, low-cost alarm comprising the E-173H transducer and horn assembly plus all the driving electronics contained in a small attractive package. The small, light-weight unit is designed for O.E.M.'s or other users who have need for a self-contained, high-intensity alarm which can be operated from a 9-Volt battery. The E-194 delivers a sound level of 123 dB vs .0002 ubar at 1 foot over the frequency range of 2.5 to 3.5 kHz when connected to a 9-volt battery, with a current drain of less than 150 mA. The acoustic power output is 20 dB greater than present UL specification requirements for smoke alarms and intrusion alarms

Massa Products Corporation is a leading designer and manufacturer of a wide variety of electroacoustic transducers and systems for use in air and under water, with over 50 years of specialized experience in this field.