GST C-9404 Conventional Sounder (LPCB Certified)

Description

The GST C-9404 Conventional Sounder is a high-performance, audible life-safety notification appliance engineered by GST (Carrier) to provide clear, high-intensity emergency evacuation signaling. Designed for reliable operation on standard 24 VDC notification appliance circuits (NAC), the GST C-9404 produces an acoustic output exceeding 95 dB(A) at 1 meter, ensuring emergency warnings easily penetrate high ambient noise environments. Certified under rigorous European EN 54-3 standards and approved by LPCB, the GST C-9404 provides essential audible alerting across commercial high-rises, educational facilities, healthcare institutions, and industrial workshops.

Technical Specifications Table

High-Decibel Evacuation Signaling & Energy Efficiency in GST C-9404

The acoustic output of the GST C-9404 sounder is powered by an advanced piezoelectric transducer that delivers a minimum sound pressure of 95 dB(A) at a 1-meter reference distance. Engineered to broadcast across wide indoor open zones, the GST C-9404 ensures that building occupants receive immediate, unmistakable alert warnings during a fire condition. With two distinct tone selections available directly on the circuit board, system engineers can assign distinct acoustic profiles for phased evacuation schemes or general fire alarms.

A crucial engineering benefit of the GST C-9404 is its low operational current consumption. Drawing no more than 35 mA at 24 VDC (0.84 W), the sounder places minimal electrical load on the primary power supply and standby battery banks. This low current demand enables fire alarm designers to connect significantly more notification appliances per output circuit while extending overall loop wiring lengths without requiring secondary booster power supplies.

Installation workflows are optimized through modular base architecture. The GST C-9404 incorporates a separate wiring base where electrical cables land directly on screw terminals, allowing electrical contractors to complete continuity and insulation resistance checks before attaching the active sounder head. With options for shallow base mounting on flush back-boxes or deep base configurations for surface conduit entries, the GST C-9404 fits seamlessly into varied architectural layouts.

• Dual Selectable Alarm Tones: Field-configurable acoustic patterns accommodate specific site evacuation procedures.
• High Sound Pressure Output: Generates ≥ 95 dB(A) to ensure reliable notification across noisy commercial and industrial spaces.
• Low Operating Current (35 mA): Minimizes power draw to maximize the quantity of appliances supported on a single circuit.
• Modular First-Fix Base Design: Allows pre-wiring and loop testing prior to attaching the main sounder body.

Frequently Asked Questions (FAQ)

Q1: What sound output level does the GST C-9404 conventional sounder deliver?
A: The GST C-9404 produces an acoustic output of at least 95 dB(A) measured at a distance of 1 meter directly in front of the device.

Q2: Can the GST C-9404 sounder be connected to addressable fire alarm panels?
A: Yes. While it is a conventional 24 VDC sounder, it connects directly to addressable control panels via monitored sounder circuit outputs or through addressable control/relay modules (such as the GST DI-9301E).

Q3: How are the alarm tones changed on the GST C-9404?
A: The GST C-9404 features 2 selectable tone modes that can be configured by setting internal jumpers on the circuit board during installation.

Q4: What is the current consumption of the GST C-9404 during an active alarm?
A: The sounder draws a maximum operating current of ≤ 35 mA at nominal 24 VDC, corresponding to an efficient power consumption of 0.84 W.

Q5: What base options are available for installing the GST C-9404?
A: The unit supports two mounting bases: a shallow base (95.9 mm total height) for flush-mounted electrical junction boxes and a deep base (110.4 mm total height) with knockout entries for surface-mounted conduits.

Q6: Is the GST C-9404 suitable for outdoor installation?
A: The GST C-9404 has an IP33C (Type A) ingress protection rating and is certified primarily for indoor vertical wall or ceiling installations.