LC103-AD Open-Face Weatherproof Hotline Telephone
Auto-Dial Handset | Analog · SIP · 4G | IP66/IP67 · IK10 · CE · FCC · RoHS · ISO9001 | 2-Year Warranty
The LC103-AD Open-Face Weatherproof Hotline Telephone is a rugged industrial auto-dial phone designed for fast, reliable voice communication in harsh outdoor and industrial environments.
This model has a simple user interface: lift the handset and the phone automatically dials a pre-programmed number. No keypad is required, making it ideal for locations where users need a quick and direct connection to security, operations, maintenance, dispatch, or emergency contacts.
The LC103-AD is available in Analog, SIP/VoIP, and 4G LTE versions, allowing the same mechanical platform to be used across different communication infrastructures.
Designed without a door cover, this open-face hotline telephone provides fast access to the handset while maintaining a rugged, weatherproof construction suitable for demanding applications.
Why Choose LC103-AD
- Open-face hotline design for fast and simple access
- Auto-dial handset operation — lift the handset to call a pre-programmed number
- No keypad required, reducing user confusion and simplifying operation
- Available in Analog, SIP/VoIP, and 4G LTE versions
- Die-cast aluminum alloy enclosure with durable polyurethane finish
- IP66/IP67 weatherproof protection for outdoor and harsh environments
- IK10 impact resistance for vandal-prone and heavy-duty locations
- Corrosion-resistant hardware for long-term outdoor service
- Noise-cancelling handset microphone for clearer calls in noisy areas
- 80 cm armored handset cord, with optional heavy-duty curly cord
- Hearing Aid Compatible handset
- Wall mounting support with mounting bar
- 3×M20 cable gland entry points for protected cable access
- Wide operating temperature range: −40°C to +65°C
- MTBF exceeds 50,000 hours under normal operating conditions
Designed for Mission-Critical Infrastructure
This open-face weatherproof hotline telephone is suitable for applications where standard office phones or consumer-grade devices are not reliable enough.
Typical applications include:
- Transportation & Infrastructure
- Industrial Facilities
- Maritime & Outdoor Sites
- Public Safety & Security
- Mining & Heavy-Duty Environments
One Mechanical Platform — Three Communication Options
The LC103-AD can be supplied in three main communication versions depending on site infrastructure.
1. SIP / VoIP Option — LC103-AD-SIP
The SIP version is designed for integration with modern IP networks and SIP-compatible PBX systems. Power: PoE IEEE 802.3af or 12V DC. Protocol: SIP 2.0, RFC3261. System Reliability:
Automatic switching between primary and backup SIP servers. Management:
Browser-based web configuration, remote diagnostics, firmware upload, and adjustable microphone / earpiece settings. Control: Two relays for remote control of external devices such as gates, beacons, sirens, or other equipment. Best For: Industrial networks, campus systems, transportation infrastructure, IP-PBX environments, and sites with Ethernet or fiber network infrastructure.
2. 4G LTE Option — LC103-AD-4G
The 4G version is designed for locations where landlines or wired network infrastructure are not available. Connectivity: Independent 4G LTE operation via standard SIM card. Power: 12V DC.
Call Function: Auto-dial to pre-programmed number when the handset is lifted. Configuration:
Remote configuration by SMS. Monitoring: Remote reporting for low battery voltage, weak signal, speaker volume, and microphone volume. Antenna: Externally mounted SMA antenna with cable. Best For: Remote sites, infrastructure-limited areas, temporary facilities, outdoor emergency points, gates, parking areas, utilities, and locations without PBX or Ethernet infrastructure.
3. Analog Option — LC103-AD-A
The Analog version is designed for traditional telephone infrastructure, PABX systems, or analog gateways. Power: Phone-line powered. Compatibility: Compatible with standard PABX systems. Call Function: Automatic dialing with delay after handset pick-up. Management: Remote programming allows network management from a central location. Call Control: Programmable auto hang-up timer. System Testing: Supports scheduled dialing to the central control phone to confirm operation. External Light Support: Can support telephone-line-powered external light on top of the phone, depending on configuration. Best For: Existing analog/PABX infrastructure, legacy systems, tunnel communication, industrial plants, and facilities where line-powered operation is preferred.
Installation & Mounting
The LC103-AD is designed for straightforward field installation.
Mounting:
Wall mounting with mounting bar
Cable Entry:
3×M20 cable gland entry points
Housing:
Open-face design without door cover for quick handset access
Construction:
Die-cast aluminum alloy enclosure with polyurethane finish
Available Customizations & Accessories
Available options may include (Minimum Order Quantity may apply):
- Custom body color: red, orange, green, blue, black, or other RAL colors
- Custom printed text, labels, or logo
- Heavy-duty curly handset cord
- External flashing beacon
- External horn or loudspeaker integration
- Acoustic hood for high-noise areas
- Pole, pillar, or bollard mounting solutions
- Solar power and battery backup options for selected 4G configurations
Order Information
LC103-AD-S Open-Face Weatherproof Hotline Telephone, SIP/VoIP, PoE or 12V DC, yellow
LC103-AD-A Open-Face Weatherproof Hotline Telephone, Analog line-powered, yellow
LC103-AD-4G Open-Face Weatherproof Hotline Telephone, 4G LTE, 12V DC power supply and antenna included, yellow
































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