CH-09-301-S(M)

Overview

The CH-09-301-S(M) is a piezoelectric chime alarm from the AudioLarm II series, manufactured by Floyd Bell Inc. Designed for panel mounting, this internally driven indicator operates on DC voltage within a range of 5 to 25 volts. It features wire leads for termination and produces an acoustic output of 70 dB at 5V measured at a distance of 61 cm. The unit generates a frequency of 2.9 kHz with a power consumption current between 5 and 25 mA. Physical dimensions include a diameter of 1.410 inches (35.81 mm) and a maximum installation height of 1.480 inches (37.59 mm). It is rated IP68 for dust tightness and waterproofing, with an operating temperature range of -20°C to 65°C.

Feature Summary

• Internally driven piezoelectric technology for direct DC connection
• IP68 rated enclosure providing dust tight and waterproof protection
• Panel mount design with top-positioned wire lead ports

Applications

• Industrial machinery status indication
• Control panel alarm signaling
• Equipment safety warning systems

Procurement Notes

Verify the specific suffix (M) against official datasheets to confirm terminal configuration and lead length specifications. Ensure the required sound pressure level and frequency match the application's auditory requirements. Confirm that the operating voltage range aligns with the system's available DC supply. Check environmental ratings against the installation site conditions.

Selection Notes

Select this component when a robust, waterproof audible indicator is required for harsh environments. The internal driver simplifies circuit design by eliminating external drive components. Consider the physical size constraints and the need for high ingress protection when choosing between this model and standard industrial alarms.

Part Context

This part belongs to the AudioLarm II series, recognized as a widely used industrial alarm line. It serves as a durable solution for manufacturers requiring reliable visual and audible feedback in heavy-duty applications. The series emphasizes longevity and resistance to environmental factors common in industrial settings.

Replacement Considerations

Consult official substitution guides for compatible alternatives. Verify pinout compatibility and acoustic performance metrics before replacing existing units in established designs.