30W IP66 Column Speaker with Overvoltage Protection & Grounding Alarm
30W RMS • IP66 • Overvoltage Protection (Auto-off @254V) • Grounding Alarm • Aluminum Alloy • IP54 Rated
T-7782P 30W IP66 OVP
Enhanced protection for unstable power grids. The T-7782P is a 30W IP66 column speaker with built-in overvoltage protection that automatically powers off at 254V to prevent damage during power surges. A grounding alarm alerts when proper grounding is missing – ideal for industrial sites, developing regions, and locations with unstable power infrastructure.
| Model Number | T-7782P |
| Product Type | IP66 Outdoor Column Speaker with Overvoltage Protection |
| Amplifier Output | 30W RMS (Class D) |
| Weatherproof Rating | IP66 (dust-tight, powerful water jets) |
| Enclosure Material | Aluminum Alloy |
| Overvoltage Protection | Auto power-off at 254V AC |
| Grounding Alarm | Visual indicator for missing ground |
| Network | 10/100Mbps Ethernet (RJ45) |
| Audio Protocols | TCP/IP, UDP, HTTP, RTP, RTSP |
| Audio Codecs | MP3, WAV, PCM |
| Onboard Storage | None (pure IP speaker) |
| Frequency Response | 100Hz – 15kHz (±3dB) |
| THD+N | < 0.5% (1kHz, rated power) |
| S/N Ratio | > 85dB |
| Power Supply | PoE (802.3af) or DC 24V |
| Power Consumption | ≤ 15W (idle), ≤ 35W full volume |
| Mounting | Heavy-duty adjustable bracket included |
| Dimensions (HxWxD) | 500 x 120 x 100 mm |
| Weight | 3.3 kg |
| Operating Temperature | -20°C – 50°C |
| Humidity | 10% – 95% (non-condensing) |
| Color | White / Black (optional) |
| Certifications | CE, FCC, RoHS, IP66 |
In regions with unstable power grids, voltage spikes can damage sensitive electronics. The T-7782P monitors input voltage and automatically powers off at 254V AC, protecting internal components. When voltage returns to safe levels, the speaker resumes normal operation. Ideal for industrial sites, developing countries, and areas prone to power fluctuations.
The T-7782P is a rugged 30W IP66 column speaker that adds critical electrical protection features to the reliable T-7782 platform. Designed for locations with unstable power grids or where proper grounding cannot be guaranteed, it ensures your outdoor audio system survives voltage spikes and alerts to grounding issues.
Overvoltage Protection – Auto-off at 254V: In many industrial and developing regions, voltage fluctuations are common. The T-7782P continuously monitors the input voltage and automatically shuts down if it exceeds 254V AC, preventing damage to the amplifier and internal electronics. When voltage returns to safe levels, the speaker automatically resumes operation.
Grounding Alarm: Proper grounding is essential for both safety and performance. The T-7782P features a visual grounding alarm that indicates when the unit is not properly grounded – allowing installers and maintenance staff to quickly identify and correct grounding issues.
IP66 Weatherproof Construction: Like all T-7782 series speakers, the P model features IP66-rated aluminum alloy construction, completely dust-tight and protected against powerful water jets – ideal for outdoor installation in any weather.
30W High Power: With 30W of clean Class D amplification, the T-7782P delivers clear audio for parks, campuses, industrial sites, and public spaces.
Auto power-off at 254V AC. Protects against voltage spikes and unstable power grids.
Visual indicator alerts when grounding is missing – ensures safety and performance.
Dust-tight and protected against powerful water jets. Withstands rain, snow, and hose-down.
High-power amplification for clear audio in outdoor environments.
| Parameter | Specification |
|---|---|
| Protection Type | Voltage monitoring, automatic shutdown |
| Trip Voltage | 254V AC ± 2% |
| Hysteresis | 10V (resumes at <244V AC) |
| Response Time | < 100ms |
| Recovery | Automatic when voltage normalizes |
| Indicator | Red LED when protection active |
254V Trip
Auto power-off
| Parameter | Specification |
|---|---|
| Detection Method | Ground continuity monitoring |
| Indicator | Yellow LED illuminates when ground missing |
| Test Function | Self-test on power-up |
| Compliance | Helps meet electrical safety standards |
Ground Alarm
Visual indicator
| Parameter | Rating |
|---|---|
| Ingress Protection | IP66 |
| Operating Temperature | -20°C to 50°C |
| Storage Temperature | -30°C to 70°C |
| Humidity | 10% – 95% non-condensing |
| Corrosion Resistance | Aluminum alloy, UV-stable paint |
Withstands rain, snow, dust
Electrical protection added
In many parts of the world, mains voltage can fluctuate significantly – especially in industrial areas or developing regions. A spike to 260V or higher can destroy unprotected electronics. The T-7782P's built-in protection automatically disconnects at 254V, saving the speaker from damage. When voltage returns to safe levels, operation resumes automatically. No fuse replacement, no service call.
| Model | Power | Protection | Storage | SIP |
|---|---|---|---|---|
| T-7782 | 30W | Standard | 8GB SSD | Yes |
| T-7782P | 30W | Overvoltage + Ground Alarm | No | No |
| T-7784 | 60W | Standard | 8GB SSD | Yes |
The T-7782 and T-7782P share the same 30W power, IP66 rating, and aluminum alloy construction. Key differences:
| Feature | T-7782 | T-7782P |
|---|---|---|
| Onboard Storage | 8GB SSD | No |
| SIP Support | Yes | No |
| Overvoltage Protection | No | Yes (254V trip) |
| Grounding Alarm | No | Yes |
| Best For | Network-dependent, offline playback | Unstable power grids, safety focus |
IP66 rating: 6 = dust-tight (no dust ingress), 6 = protected against powerful water jets (heavy seas, hose-down). Suitable for outdoor use in all weather conditions, including rain, snow, and cleaning with pressure washers. Not suitable for submersion.
The T-7782P automatically resumes normal operation when voltage returns to safe levels (<244V AC). No manual reset required. The red protection LED remains on during the fault condition for easy troubleshooting.
T-7782P (pole-mounted) with PoE from conditioned UPS
Industrial environment with frequent voltage fluctuations. The T-7782P's overvoltage protection ensures the speaker survives power spikes. Grounding alarm helps maintenance verify proper installation. PoE provides isolated power, but protection still active on DC input.