WMHF-I

Pilfer-Proof Page/Private Telephone, Hands-Free

Name: SMART WMHF-I Pilfer-Proof Page/Private Telephone, Hands-Free
Brand: SMART
SKU: wmhf-i

Hands-free page/private station with press-to-talk and internal speaker

Hands-free PTT30 W amplifierNEMA-45 kg

Datasheet · PDF 139 KB

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Category: Plant Communication (PA) Systems
Environment: Indoor · Outdoor
Interface: Stand-alone

Ideal for

Cement plants
Mines
Steel plants
Ammonia storage areas
Large and medium-scale industrial units

What it does

The page/private station without a handset to break. Any WMHF-I pages all the others; the person who hears it presses talk on the nearest unit and answers privately. Each unit has a 30 W amplifier for its horn plus an internal speaker, and power can be tapped locally.

01
Hands-free: press to talk, release to listen
02
Page and private talkback in one unit
03
Unlimited units on one parallel loop
04
Own 30 W amplifier per unit, plus internal speaker
05
Non-speciality cable; power tapped locally

Specifications

Electrical · 5

Power consumption	< 35 W
Standby consumption	< 5 W
Insulation	600 V for 3 min between power source & parallel line
UPS load	30 VA (RMS), peak 50 VA
Power supply	AC mains 220 / 110 V (system diagram)

Acoustic · 5

Amplifier	30 W (RMS)
Horn speaker	60 W, 8 Ω
Internal amplifier	0.5 W (RMS) (written '.500 Watts')
Internal speaker	3 W, 8 Ω
Microphone	Noise cancelling dynamic

Mechanical · 4

Dimensions	360 × 160 × 180 mm
Weight	5 kg
Housing	16-gauge powder-coated steel body
Mounting	Vertical wall / panel

Environmental · 4

Moisture resistance	0 to 95% humidity with PCB conformal coated
Temperature	0 to +60 °C
Dust resistance	Fully weatherproof enclosure
Protection	Conforming to NEMA-4

Connectivity · 1

Cable	1.5 sq mm cable in parallel loop; 1.5 sq mm 3-core power cable per unit; 0.75 mm 2-core flexible cable for loudspeakers

Compare with similar models

Differences first: interface, power, protection and output, then installation. Full specifications are in each model's table.

Comparison of WMHF-I with similar models. Rows that differ come first; “Not specified” means the datasheet does not list it.
Specification	WMHF-I Pilfer-Proof Page/Private Telephone, Hands-Free	WMHS-I Page/Private Telephone, Handset Type	WMHF-IV Pilfer-Proof Pagephone (1+1), Hands-Free	WMHF-I-3W Page/Private System Unit
Power supplydiffers	AC mains 220 / 110 V (system diagram)	AC mains 220 / 110 V (system diagram)	220 V AC / 110 V AC (switchable)	Not specified
Protectiondiffers	Conforming to NEMA-4	IP 65	Conforming to NEMA-4	IP 65
Cablediffers	1.5 sq mm cable in parallel loop; 1.5 sq mm 3-core power cable per unit; 0.75 mm 2-core flexible cable for loudspeakers	1.5 sq mm 3-core power cable per unit; 24/0.2 mm 2-core twisted cable for loudspeakers; parallel loop cable (core count to be confirmed)	Not specified	1.5 sq mm cable in parallel loop; 1.5 sq mm 3-core power cable per unit; above 0.75 mm 2-core flexible cable for loudspeakers
Interface	Stand-alone	Stand-alone	Stand-alone	Stand-alone
Power consumption	< 35 W	< 35 W	< 35 W	< 35 W
Standby consumption	< 5 W	< 5 W	< 5 W	< 5 W
Insulation	600 V for 3 min between power source & parallel line	600 V for 3 min between power source & parallel line	600 V for 3 min between power source & parallel line	600 V for 3 min between power source & parallel line
Moisture resistance	0 to 95% humidity with PCB conformal coated	0 to 95% humidity with PCB conformal coated	0 to 95% humidity with PCB conformal coated	0 to 95% humidity with PCB conformal coated
Dust resistance	Fully weatherproof enclosure	Fully weatherproof enclosure	Fully weatherproof enclosure	Fully weatherproof enclosure
Environment	Indoor, Outdoor	Indoor, Outdoor	Indoor, Outdoor	Indoor, Outdoor
Temperature	0 to +60 °C	0 to +60 °C	0 to +60 °C	0 to +60 °C
Amplifier	30 W (RMS)	30 W (RMS)	30 W (RMS)	30 W (RMS)