CH-09-525-W(M)

Overview

The CH-09-525-W(M) is a piezoelectric chime alarm manufactured by Floyd Bell Inc, belonging to the Audiolarm II series. It features an internally driven indicator circuit and accepts DC input within a voltage range of 5 to 25 volts. The device operates at a frequency of 2.9 kHz with a sound pressure level of 70 dB measured at 5V and 61 cm. Power consumption ranges from 5 to 25 mA depending on the applied voltage. Designed for panel mounting, it utilizes wire leads for connection and offers IP68 protection against dust and water ingress. The unit measures 1.410 inches in diameter and has a maximum installed height of 1.480 inches.

Feature Summary

• Internally driven piezoelectric chime mechanism
• IP68 rated for dust tightness and waterproofing
• Wide operating voltage range from 5 to 25 VDC

Applications

• Industrial automation equipment signaling
• Panel mount alarm systems
• Waterproof environmental monitoring stations

Procurement Notes

Verify the specific suffix designation (M vs F) as it may indicate variations in lead configuration or terminal type. Confirm that the required sound pressure level and frequency meet the acoustic requirements of the installation environment. Ensure the panel cutout dimensions accommodate the specified diameter and height constraints for proper fitment.

Selection Notes

Select this component when a robust, waterproof audible indicator is required for harsh environments. The wide voltage tolerance allows compatibility with various DC power supplies without external regulation. Consider the internal drive circuitry which simplifies integration by reducing the need for additional driver components compared to externally driven buzzers.

Part Context

This part belongs to the Audiolarm II series of industrial chimes. It is designed for durability in demanding applications where standard indicators might fail due to moisture or dust exposure. The piezoelectric technology ensures consistent performance across the specified temperature range of -20°C to 65°C.

Replacement Considerations

Cross-reference with other models in the Audiolarm II series for potential substitutes. Verify mechanical dimensions and electrical specifications match exactly before substitution. Check if alternative suffixes offer different lead lengths or termination styles suitable for the existing wiring harness.