The Bosch LCZ-UC04S-IN is a compact 4-watt ceiling loudspeaker designed for clear voice announcements and background music in indoor environments. Its splash-proof design (IPx4 rating) makes it suitable for areas with occasional moisture exposure, such as restrooms, kitchens, or covered outdoor spaces. The speaker features a modern, unobtrusive styling and is easy to install using spring clamps.
Key Specifications:
Rated Power: 4 Watts
Maximum Power: 6 Watts
Sound Pressure Level (1 kHz, 1 m): 96.9 dB at 4W / 91.4 dB at 1W
Effective Frequency Range: 85 Hz to 10 kHz (-10 dB)
Opening Angle (-6 dB): 180° at 1 kHz / 89° at 4 kHz
Rated Impedance: 2500 Ohm
Rated Input Voltage: 100 V
Connector: 4-Pole Screw Terminal
Dimensions: Diameter: 164 mm; Cutout Diameter: 142 mm; Depth: 64 mm
Weight: 0.53 kg
Protection Rating: IPx4 (splash-proof)
Operating Temperature: -5 °C to +55 °C
Storage Temperature: -40 °C to +70 °C
Applications:
Ideal for use in offices, retail stores, educational institutions, healthcare facilities, and other public buildings where clear audio and moisture resistance are required.