WMHS-II

PA Telephone, Handset Type

Name: SMART WMHS-II PA Telephone, Handset Type
Brand: SMART
SKU: wmhs-ii

PA telephone with built-in 30 W amplifier; pages its own horn

30 W amplifier220/110 V AC24/50 V line5 kg

Datasheet · PDF 294 KB

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

Ideal for

Cement plants
Steel plants
Mines
Power generation facilities
Fertilizer plants
Sugar mills

What it does

A telephone and a paging point in one box. Dial a WMHS-II and your announcement plays on its own horn at that location only; lift the handset and the call goes private. Each set carries its own 30 W amplifier, so there is no central amplifier rack, and it works on the SMART MCS-II or any plant EPABX.

01
Built-in 30 W RMS amplifier drives an external 60 W horn
02
Announcement only at the dialled location; several sets can page at once
03
Private conversation when the handset is lifted
04
Two sets can share one extension
05
16-gauge steel body, powder coated
06
Options: customised dial plates with FLASH and RESET

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 · 3

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

Mechanical · 7

Handset	Standard handset, four feet stainless steel armour tube
Dimensions	360 × 160 × 180 mm
Weight	5 kg
Housing	16 SWG powder-coated steel body
Cradle	Aluminium alloy with magnetic reed switch
Handset construction	High impact ABS
Mounting	Vertical wall / panel

Environmental · 3

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

Compare with similar models

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

Comparison of WMHS-II with similar models. Rows that differ come first; “Not specified” means the datasheet does not list it.
Specification	WMHS-II PA Telephone, Handset Type	WMHS-II ID PA Telephone, Indoor / Desktop Type	WMHF-II Pilfer-Proof PA Telephone, Hands-Free	WMHS-IIWP Weatherproof PA Telephone
Handsetdiffers	Yes	Yes	No	Yesnoise-cancelling
Hands-freediffers	No	No	Press-to-talkCONNECT / PTT / RELEASE	No
Vandal-resistantdiffers	Nohandset model	Nodesktop	Yes	Nohandset model
Protectiondiffers	Not specified	IP 55	IP 65	Not specified
Environmentdiffers	Indoor, Outdoor	Indoor	Indoor, Outdoor	Indoor, Outdoor
Mountingdiffers	Vertical wall / panel	Indoor wall or desk top	Vertical wall / panel	Vertical wall / panel
Dimensionsdiffers	360 × 160 × 180 mm	270 × 110 × 130 mm	360 × 160 × 180 mm	422 × 197 × 146 mm
Weightdiffers	5 kg	1.2 kg	5 kg	8 kg
Housingdiffers	16 SWG powder-coated steel body	16 SWG powder-coated steel body	16 SWG powder-coated steel body	Aluminium alloy casting body with integrated canopy & powder-coated surface finish
Paging / talkback	Page phone (built-in amplifier)30 W; private mode on handset lift	Page phone (built-in amplifier)30 W; private mode	Page phone (built-in amplifier)horn and internal speaker	Page phone (built-in amplifier)30 W; private mode
Interface	Analogue	Analogue	Analogue	Analogue
Phone line	24 V (EPABX) / 50 V (telephone line)	24 V (EPABX) / 50 V (telephone line)	24 V (EPABX) / 50 V (telephone line)	24 V (EPABX) / 50 V (telephone line)

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