The Grandstream DP735 is a high-performance, ruggedised DECT cordless IP handset designed for demanding professional environments, including warehouses, retail stores, healthcare facilities, and industrial sites. Engineered for durability, it features an IP67-rated casing that is waterproof, dust-proof, and resistant to cleaning chemicals. Its antimicrobial surface makes it an ideal solution for clinical or hygienic workspaces. When paired with a compatible Grandstream DECT base station (such as the DP755), it provides extensive range and enterprise-grade telephony features.
Technical Specifications
- Model Number: DP735
- Display: 2.4-inch (240×320) colour TFT LCD
- Connectivity: DECT (requires companion DECT base station like DP755, DP752, or DP750)
- Outdoor Range: Up to 400 meters (with DP755/DP752) or 300 meters (with DP750)
- Indoor Range: Up to 50 meters
- SIP Support: Up to 20 SIP accounts per system (with DP755); supports up to 20 lines per handset
- Audio: Full HD audio (handset and speakerphone), full-duplex speakerphone, 3.5mm headset jack
- Battery: Rechargeable 2000mAh Li-ion; up to 65 hours talk time / 650 hours standby
- Durability: IP67-rated (waterproof, dust-proof), antimicrobial casing, drop-safe from 2.5 meters
- Ports: Micro-B USB (for alternative charging/non-battery operation), 3.5mm headset jack
Key Features
- Ruggedised Design: Built to withstand harsh conditions, including exposure to moisture, dust, and industrial cleaning agents, while maintaining a 2.5-meter drop-safety rating.
- Extended Battery Life: Provides industry-leading talk time of up to 65 hours, with a quick-charge capability that yields 4 hours of talk time from a 10-minute charge.
- Collaborative Tools: Includes a dedicated push-to-talk (PTT) button, built-in proximity and accelerometer sensors, and support for 3-way audio conferencing.
- Advanced Security: Features DECT authentication and encryption technology to ensure secure communications and account protection.
- Simplified Provisioning: Fully compatible with Grandstream’s UCM series for Zero Config provisioning, and supports automated provisioning via TR-069 and XML configuration files.






