WMHF-II

Pilfer-Proof PA Telephone, Hands-Free

Name: SMART WMHF-II Pilfer-Proof PA Telephone, Hands-Free
Brand: SMART
SKU: wmhf-ii

Hands-free pilfer-proof PA phone with press-to-talk, no handset to break

Hands-free PTT30 W amplifierIP 655 kg

Datasheet · PDF 316 KB

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Category: PA Telephones
Environment: Indoor · Outdoor
Interface: Analogue

Ideal for

Cement plants
Paper mills
Mines
Construction sites
Steel plants

What it does

The PA telephone for places where a handset will not survive. WMHF-II replaces the handset with CONNECT, press-to-talk and RELEASE buttons, and its built-in amplifier drives an external horn plus an internal speaker. It is a field unit for the SMART MCS-II or a plant EPABX.

01
No handset: CONNECT, PTT and RELEASE buttons
02
Built-in 30 W amplifier for an external horn
03
3 W internal speaker
04
Auto disconnect frees the line for the next call
05
16-gauge steel enclosure, powder coated

Specifications

Electrical · 7

Power supply	220 V AC / 110 V AC (switchable)
Phone line	24 V (EPABX) / 50 V (telephone line)
Power consumption	< 35 W
Standby consumption	< 5 W
Insulation	600 V for 3 min between power source & telephone line
Ringer voltage	75 V AC (150 V PP)
UPS load	30 VA (RMS), peak 50 VA

Acoustic · 4

Amplifier	30 W (RMS)
Horn speaker	60 W, 8 Ω
Internal speaker	3 W, 8 Ω
Microphone	Noise cancelling dynamic

Mechanical · 4

Dimensions	360 × 160 × 180 mm
Weight	5 kg
Housing	16 SWG 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	IP 65

Compare with similar models

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

Comparison of WMHF-II with similar models. Rows that differ come first; “Not specified” means the datasheet does not list it.
Specification	WMHF-II Pilfer-Proof PA Telephone, Hands-Free	WMHS-II PA Telephone, Handset Type	WMHS-II ID PA Telephone, Indoor / Desktop Type	WMHF-III Pilfer-Proof (Vandal-Resistant) Telephone
Paging / talkbackdiffers	Page phone (built-in amplifier)horn and internal speaker	Page phone (built-in amplifier)30 W; private mode on handset lift	Page phone (built-in amplifier)30 W; private mode	No
Handsetdiffers	No	Yes	Yes	No
Hands-freediffers	Press-to-talkCONNECT / PTT / RELEASE	No	No	Press-to-talkCONNECT / RELEASE / PTT
Vandal-resistantdiffers	Yes	Nohandset model	Nodesktop	Yes
Protectiondiffers	IP 65	Not specified	IP 55	Conforming to NEMA-4
Environmentdiffers	Indoor, Outdoor	Indoor, Outdoor	Indoor	Indoor, Outdoor
Mountingdiffers	Vertical wall / panel	Vertical wall / panel	Indoor wall or desk top	Vertical wall
Dimensionsdiffers	360 × 160 × 180 mm	360 × 160 × 180 mm	270 × 110 × 130 mm	360 × 160 × 180 mm
Weightdiffers	5 kg	5 kg	1.2 kg	5 kg
Housingdiffers	16 SWG powder-coated steel body	16 SWG powder-coated steel body	16 SWG powder-coated steel body	16 SWG steel, powder coated
Interface	Analogue	Analogue	Analogue	Analogue
Power supply	220 V AC / 110 V AC (switchable)	220 V AC / 110 V AC (switchable)	220 V AC / 110 V AC (switchable)	220 V AC / 110 V AC (switchable)

Part of a system

Plant PA system

Paging and private talk across a whole plant, in two architectures. MCS-II puts a 30 W amplifier in every PA telephone and needs no amplifier rack; MCS-III keeps line-powered phones in the field and drives 100 V loudspeaker lines from central 250 W amplifiers.

How the system works