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  4. Grandstream DP735 Ruggedized DECT HD Handset, IP67, 2.4" Color LCD, 65h Talk Time
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Grandstream DP735 Ruggedized DECT HD Handset, IP67, 2.4" Color LCD, 65h Talk Time

Part number DP735
  • Ruggedized design, IP67 rated water-proof, dust-proof, cleaning chemical resistant, antimicrobial casing, drop safe from 2.5m
  • Range of up to 400 meters outdoors (with DP755) and 50 meters indoors
  • 2.4 inch (240x320) color TFT LCD with 3 programmable soft keys
  • 65-hour talk time and 650-hour standby time; 10-minute charge provides up to 4 hours of talk time
  • Up to 20 SIP accounts and 20 lines per handset as well as 3-way conferencing
  • Dedicated push-to-talk button; built-in proximity and accelerometer sensors
  • DECT authentication & encryption technology to protect calls & account
  • HD audio to maximize audio quality and clarity; full duplex speakerphone
SIP Color Screen HD Voice Weatherproof Cordless Phone DECT Grandstream
Price
⃁ 375.47 ⃁ 375.47 ⃁ 488.89 Save 23%
⃁ 375.47 ⃁ 488.89
(Tax excluded)
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  • Delivery within 4–10 business days across Saudi Arabia
  • Warranty according to the manufacturer
  • Tax invoice with every order
  • Technical support before and after purchase

Not sure this model fits your setup? Read the buying guide

Official datasheetGrandstream_DP735_Datasheet.pdf Download

Overview of Grandstream DP735

The Grandstream DP735 is a ruggedized DECT cordless HD handset built for demanding environments. Its IP67-rated casing is waterproof, dustproof and resistant to cleaning chemicals, survives drops from 2.5 meters and uses antimicrobial material that kills 99% of harmful microbes. Supported by the DP750, DP752 and DP755 base stations, it offers up to 400 meters outdoor range with the DP755, up to 20 SIP accounts and 20 lines per handset, a 2.4-inch color display, push-to-talk and proximity/accelerometer sensors. A 2000mAh battery delivers 65 hours of talk time, making it well suited to hospitals, clinics, warehouses, factories, hotels and outdoor sites.

Technical Specifications – Grandstream DP735

Air Interface

Telephony StandardDECT
Frequency Bands1880–1900 MHz (Europe), 1920–1930 MHz (US), 1910–1920 MHz (Brazil), 1786–1792 MHz (Korea), 1893–1906 MHz (Japan), 1880–1895 MHz (Taiwan)
Number of Channels10 (Europe), 5 (US, Brazil or Japan), 3 (Korea), 8 (Taiwan)
Outdoor RangeUp to 400 meters (DP752/DP755) or up to 300 meters (DP750)
Indoor RangeUp to 50 meters

Hardware

Display2.4 inch (240x320) color TFT LCD
Keys27 keys including 3 soft keys, 5 navigation/menu keys, 4 dedicated function keys for SPEAKERPHONE, MUTE, SEND, POWER/END, 3 side keys including 2 volume (up and down) and 1 Push-to-Talk key
Peripherals3-color MWI LED; 3.5mm headset jack; proximity and accelerometer sensors; removable belt clip; Micro-B USB port for alternative charging and non-battery operation; vibration ring mode
Protocol/StandardsHearing Aid Compatibility (HAC) compliant

Audio & Telephony

Voice CodecsG.722 codec for HD audio and G.726 codec for narrow band audio (G.711μ/a-law, G.723.1, G.729A/B, iLBC and OPUS are supported via companion DECT base station), AEC, AGC, Ambient noise reduction on handset mic, advanced noise suppression for incoming audio
Telephony FeaturesHold, transfer, forward, 3-way conference, push-to-talk, intercom, downloadable phonebook, call waiting, call log, auto answer, click-to-dial, flexible dial plan
HD AudioYes, both on Handset and Speakerphone
Multi-line AccessEach handset may access up to twenty (20) lines
SIP AccountsEach handset may access up to 20 SIP accounts

Security & Management

SecurityDECT authentication & encryption
Multi-languageEnglish, Czech, German, Spanish, French, Hebrew, Italian, Dutch, Polish, Portuguese, Russian, Turkish, Arabic, Chinese Simple, Chinese Tradition, Japanese, Korean, Slovakian, Serbian, Greek, Swedish
Upgrade/ProvisioningSoftware Upgrade Over-The-Air (SUOTA), handset provisioning Over-The-Air
Device ManagementYes, GDMS

Power

Power SupplyUniversal Power Supply Input AC 100-240V 50/60Hz; Output 5VDC 1A; Micro-B USB Connector
BatteryRechargeable 2000mAh Li-ion battery, 650 hours of standby time and 65 hours of talk time (laboratory data)

Physical

Package ContentHandset unit, universal power supply, charger cradle, belt clip, 1 battery, Quick Start Guide
Dimensions (H x W x D)Handset: 166.00 x 57.80 x 26.30mm; Charger cradle: 82.00 x 80.00 x 30.60mm
WeightHandset: 221.5g; Charger cradle: 56g; Universal power supply: 55g; Package: 535g
WeatherproofIP67 Rated-Water-proof, dust-proof, cleaning chemical resistant, antimicrobial casing and 2.5m drop safe
Operating TemperatureOperation: -10º to 45ºC (14 to 113ºF); Charging: 0 to 45ºC (32 to 113ºF)
Storage & HumidityStorage: -20º to 60ºC (-4 to 140ºF); Humidity: 10% to 90% non-condensing
ComplianceFCC, CE, RCM, IC

Source: Grandstream official website and datasheet. Specifications are subject to change by the manufacturer.

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PRACTICAL ANSWERS

IP phone questions

How do I choose an IP phone for an employee?

Start with the person’s daily call workflow, required keys, headset use and desk connectivity. Check the exact model against the PBX and provisioning method rather than selecting only by screen size or appearance.

Does an IP phone need a separate power adapter?

Check the phone’s supported power options, what is included in the package and the capabilities of the connected switch. Confirm that the complete proposed arrangement can power every phone, not just a single test device.

Will my headset work with the new phone?

Compare the headset and phone model numbers, connector type and any required adapter or call-control support. Ask to test answering, ending and muting a call with the intended combination before equipping a team.

Can a phone be used by a remote employee?

Confirm the PBX’s supported remote deployment method and the employee’s network requirements. Plan secure provisioning and support responsibilities; do not expose administration interfaces or assume a phone can be moved without configuration.

How should I compare phone models for a reception desk?

List the extensions the receptionist handles, the required transfer workflow and any need for expansion keys or a headset. Evaluate the full workflow with the PBX, including the features actually licensed and supported.

What should I check before deploying many IP phones?

Test a small representative group first, then review network ports, power, provisioning, user labels and the rollback plan. Keep an inventory linking each physical device to its intended user or location.

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