WMHS-IIAD

Addressable PA Telephone

Name: SMART WMHS-IIAD Addressable PA Telephone
Brand: SMART
SKU: wmhs-iiad

Stand-alone addressable PA phones, up to 9 sets on one loop

9 sets30 W amplifierNo exchange5 kg

Datasheet · PDF 305 KB

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

Ideal for

Warehouses
Construction sites
Sugar mills
Large and medium-scale industrial units

What it does

Paging for a small area with no exchange at all. Up to nine WMHS-IIAD sets share one parallel loop: press 1 to 9 to page another set, then talk privately when it is picked up. A PANIC/ALL CALL button reaches every set at once, and because each set has its own 30 W amplifier, one fault does not silence the rest.

01
Up to 9 units on one parallel loop; no exchange needed
02
Keys 1–9 select the set to page; private on pick-up
03
PANIC/ALL CALL button pages every set
04
Own 30 W amplifier per set: one fault stays local
05
Extend by running the loop from the nearest set

Specifications

Electrical · 5

Power supply	220 V AC / 110 V AC (switchable)
Power consumption	< 35 W
Standby consumption	< 5 W
Insulation	600 V for 3 min between power source & signal line
UPS load	50 VA (RMS), peak 90 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

Connectivity · 1

Cable	Parallel loop, 2-core cable

Operation · 1

System capacity	Up to 9 units in parallel

Compare with similar models

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

Comparison of WMHS-IIAD with similar models. Rows that differ come first; “Not specified” means the datasheet does not list it.
Specification	WMHS-IIAD Addressable PA Telephone	WMHS-I Page/Private Telephone, Handset Type	WMHS-II PA Telephone, Handset Type	WMHF-I Pilfer-Proof Page/Private Telephone, Hands-Free
Handsetdiffers	Standard handset, four feet stainless steel armour tube	Not specified	Yes	Not specified
Interfacediffers	Stand-alone	Stand-alone	Analogue	Stand-alone
Power supplydiffers	220 V AC / 110 V AC (switchable)	AC mains 220 / 110 V (system diagram)	220 V AC / 110 V AC (switchable)	AC mains 220 / 110 V (system diagram)
UPS loaddiffers	50 VA (RMS), peak 90 VA	Not specified	30 VA (RMS), peak 50 VA	30 VA (RMS), peak 50 VA
Insulationdiffers	600 V for 3 min between power source & signal line	600 V for 3 min between power source & parallel line	600 V for 3 min between power source & telephone line	600 V for 3 min between power source & parallel line
Protectiondiffers	Not specified	IP 65	Not specified	Conforming to NEMA-4
Cablediffers	Parallel loop, 2-core cable	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; 0.75 mm 2-core flexible cable for loudspeakers
Housingdiffers	16 SWG powder-coated steel body	16-gauge powder-coated steel body	16 SWG powder-coated steel body	16-gauge powder-coated steel body
Power consumption	< 35 W	< 35 W	< 35 W	< 35 W
Standby consumption	< 5 W	< 5 W	< 5 W	< 5 W
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