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Siemens Gigaset

Siemens Gigaset SL400A Quad with Range Extender

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Customer rating: 4.4 out of 5 | read 3 reviews or add a review

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Siemens Gigaset SL400H Price incl. VAT £84.99

Includes RTX Repeater for up to double the cordless range 1.8” high-resolution TFT colour display High-quality genuine metal frame and keypad Data synchronisation

Gigaset SL400A Quad: A set of 4 premium digital cordless phones & RTX repeater for extra range

The SL400A is a slim, pocket-sized home phone with a stylish and exquisite feel owing to its genuine metal frame. It has a generous talk-time of 14 hours and standby time of 230 hours, and a dependable range, which is effectively double with the RTX repeater. These Which? recommended digital cordless phones are a top choice for larger homes, and those who demand the very best.

Focus on your favourites

With a large customisable 1.8-inch TFT colour display, it is very easy to read and navigate through the intuitive menus and take advantage of the features the SL400A has to offer. You can upload photos of your family and friends and set them as your screensaver, instead of the default clock, and assign the photos to their respective numbers in your address book, so the pictures show as part of the caller ID. The phone’s expert mode also allows you personalise the menu view, so it includes only those features that you need every day.

Effective contact management

The SL400A can store up to 500 vCard entries so the contacts of family and friends are always at your fingertips. It is easy to transfer contacts between handsets, and you can even update and synchronise the phonebook with the contacts on your PC or laptop via Bluetooth (or mini-USB) and Gigaset’s QuickSync software. Details of your most recently dialled, missed, and received calls are stored and accessible from the handsets. And there is an integrated answering machine on the base, which can record up to 45 minutes of voicemail messages.

Why should you buy these long range cordless phones?

The Gigaset SL400A Quad with RTX Repeater offers top-class performance and extra long range.

For analogue line (BT, Virgin, TalkTalk, etc.)
No of handsets 4
System can be expanded to 6 handsets in total
Answering machine Yes | Up to 45 Minutes recording time
Phonebook Up to 500 entries (3 numbers per contact)
Keypad/touchsceen Yes | No
Caller ID (Display):
Wall mountable base | additional handsets Yes | No
Range indoors | outdoors in metres 50 | 300
Talk time | standby in hours 14 | 230
Warranty 2 years
Advanced Features
Incoming call vibrate
Anonymous call blocking/silencing Anonymous call silencing
Repeater compatible


Headset compatible
  • Via Bluetooth
  • Via GAP
Hearing Aid Compatible via Bluetooth
Large buttons/font No | Yes
Data synchronisation Yes
Picture caller ID
Screen size | Backlit 1.8
Colour Yes
Backlit/ Illuminated Keypad
Date & time
Screensavers pre-installed | downloadable Yes | Yes
Out of range indicator | alert Yes | Yes
Low battery indicator | alert Yes | Yes
Space per entry 3 numbers; First and last name; Anniversary with reminder; VIP ringtone; Picture
VIP contacts
Phonebook transfer
Room/baby monitoring
Night Mode
Base Answering Machine
Record time 45
Remote access from outside line
SMS/email notification of new messages
Playback: handset| base Yes | No
Pre-recorded/ personalised outgoing message Yes | Yes
PIN protected
Protection of recording against power failure
Handset locator
Call management & sound
Call transfer between handsets
Call waiting
Conference call
Internal calls (intercom)
Hold | with music Yes | Yes
Last number redial
One-touch loudspeaker
Earpiece volume control 5 levels
Handsfree volume control
Call Duration displayed
List of last...missed calls with time/date 20
List of last...dialled numbers with time/date 20
Two-way recording
Ringtones: melodies| polyphonic | real | downloadable 5 | 3 | 15 | Yes
Technical information
Talk time 14 hours
Standby time 200 hours +
Handset dimensions (mm) 120.8 x 46 x 16
Base dimensions (mm) 117 x 115 x 47
Charger dimensions (mm) 49 x 126.2 x 60.5
Battery type Li-Ion
Battery capacity 750 mAh
Transmission technology DECT & GAP
Frequency band 1.88 to 1.90 GHz
Languages Yes (21)

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Average Customer Review
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Customers most agreed on the following
Good points
  • Easy to read screen (1)
  • long lasting (1)
  • Lightweight (1)
  • Easy to use (1)
  • Looks good/design (1)
Bad points None

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The most helpful favorable review

The most helpful critical review 2 of 2 people found the following review helpful

product reviewsproduct reviewsproduct reviewsproduct reviewsproduct reviews 4.3/5 Siemens Gigaset SL400A Quad "This set replaced an earlier Gigaset version and it was a pleasant surprise that a couple of the old handsets could be connected, seamlessly. Excellent design; very simple to set up; works well throughout the house - although we purchased/installed ... Read the full review › Dec 10, 2014 by Anonymous

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Product Manuals Siemens Gigaset SL400A Quad with Range Extender

Siemens Gigaset SL400A Quad with Range Extender
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