WT Range – Water Tight Telephones.

The WT Range represents Guardian’s line of versatile Watertight Industrial Telephones, designed for the most extreme environmental conditions. Available in both standard telephone (WTT) and ringdown (WTR) configurations, as well as analog and VoIP versions, these units are engineered to provide maximum efficiency in challenging settings.

Built to Handle Extremes

The WT Range features a sturdy thermoplastic resin enclosure that protects internal circuitry against wind-blown dust, rain, corrosion, splashing, and high-pressure water. With Type 4X and IP66 ratings, these telephones are ideal for harsh industrial environments, offshore applications, and corrosive atmospheres.

  • Water/dust-tight thermoplastic resin enclosure with Type 4X & IP66 ratings
  • Encapsulated circuitry impervious to moisture, dust, and corrosion
  • Available with metal keypad (WTT models) or no keypad (WTR models)
  • Choice of curly cord or vandal-resistant armored handset cord configurations
  • Corrosion-protected and powder-coated steel faceplate with full gasket
  • Magnetic reed hook switch for extended service life
  • Compatible with both analog and VoIP networks
  • Noise-reducing electret microphone (noise-canceling option available)
  • Integrated mounting flanges and spring-loaded door
  • Optional fiber media converter for extended communication capabilities
Request a Quote
Guardian Telecom WTR

WT Range Product Spec Sheets.

WTT WTR SERIES V4

Download PDF

WTTH WTRH SERIES V4

Download PDF

WTTHV WTRVH SERIES V5

Download PDF

WTTV WTRV SERIES V8

Download PDF

WTTVFO WTRVFO SERIES V1

Download PDF

Parts and Accessories.

Ordering Part Number Model Description Handset Cord Keypad Dialing Phone System
P5300 WTR-11 Watertight Analog Ringdown Curly No Ringdown Analog
P5301 WTT-30 Watertight Analog Telephone Curly Yes Tone/Pulse Analog
P5302 WTT-40 Watertight Analog Telephone Armored Yes Tone/Pulse Analog
P5303 WTR-41 Watertight Analog Ringdown Armored No Ringdown Analog
P5304 WTT-30-H Watertight Analog Telephone Hazloc Curly Yes Tone/Pulse Analog
P5305 WTT-40-H Watertight Analog Telephone Hazloc Armored Yes Tone/Pulse Analog
P5306 WTR-41-H Watertight Analog Ringdown Telephone Hazloc Armored No Ringdown Analog
P5308 WTT-30-V Watertight VoIP Telephone Curly Yes Tone/Pulse VoIP
P5309 WTT-40-V Watertight VoIP Telephone Armored Yes Tone/Pulse VoIP
P5310 WTR-11-V Watertight VoIP Ringdown Telephone Curly No Ringdown VoIP
P5311 WTR-41-V Watertight VoIP Ringdown Telephone Armored No Ringdown VoIP
P5312 WTT-30-V-H Watertight VoIP Telephone Hazloc Curly Yes Tone/Pulse VoIP
P5313 WTT-40-V-H Watertight VoIP Telephone Hazloc Armored Yes Tone/Pulse VoIP
P5314 WTR-11-V-H Watertight VoIP Ringdown Telephone Hazloc Curly No Ringdown VoIP
P5315 WTR-41-V-H Watertight VoIP Ringdown Telephone Hazloc Armored No Ringdown VoIP
P5316 WTR-11-FO Watertight Fiber VoIP Ringdown Telephone Curly No Ringdown Fiber Media Converter
P6311 WTT-40-FO Watertight Fiber Analog Telephone Armored Yes Tone/Pulse Fiber Media Converter
P6312 WTR-41-FO Watertight Fiber VoIP Ringdown Telephone Armored No Ringdown Fiber Media Converter
Ordering Part Number Description Note
NC Noise Cancelling Microphone
AD Auto Dialer
LCK-WTE Locking Door
VR-WTE Vandal Resistant Faceplate Screws
BP-WTE Inside Bottom Plate for other Equipment
WTT-EXP VoIP Expansion Module
CC Conformal Coated Circuit Board
Guardian Telecom provides rugged, intelligent communication and monitoring systems built for the harshest environments. When safety, security, and uptime matter most, we’re your first line of defense.
Guardian Telecom provides rugged, intelligent communication and monitoring systems built for the harshest environments. When safety, security, and uptime matter most, we’re your first line of defense.
SITEMAP
Home
About Us
Where to Buy
Support
Contact
CONTACT US
Address: 10, 2256 29th Street NE
Calgary, Alberta, Canada T1Y 7G4
Email: info@guardiantelecom.com
Phone: +1-403-258-3100
©2025 Guardian Telecom. Website design by Purple Pig | Sitemap