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Siemens Gigaset

Siemens Gigaset SL400A with Range Extender

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this product has 13reviews 13questions


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Customer rating: 4.4 out of 5 | read 13 reviews or add a review

2 years guarantee

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Siemens Gigaset SL400H Price incl. VAT £69.99

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 Cordless Phone Design Awards

The Siemens Gigaset SL400A Premium Cordless Phone with Extra Range

The Gigaset SL400A boasts an elegant design and is made from high-quality materials that will add a touch of class to your home. And the substantial standalone range is doubled with an RTX repeater for better call quality and coverage.

Impressive features

With Bluetooth technology you can use the SL400A to pair with a compatible headset to enjoy calls comfortably hands-free. It can also be used to update the address book (which has space for up to 500 contacts), import image files for Picture Caller ID and/or music files for a personalised ringtone. And even when you are not around to receive calls, the SL400A has you covered with an answering machine that can record up to 45 minutes of messages.

Performance you can rely on

Gigaset SL400A Cordless PhoneThe SL400A is a top-class cordless phone and as such delivers superior sound, build quality, battery life, and range. The handset is equipped with Gigaset’s HSP technology, which enhances the clarity of calls above that of standard analogue phones and further benefits from a high-quality speakerphone. The genuine metal-frame of the handset not only looks good but also makes the SL400 more durable. And on a single charge, you can expect a talk-time of up to 14 hours and a standby time of 230 hours.

Why should you buy this long range cordless phone?

If you’re looking for a digital cordless phone with long range and demand the best then the Gigaset SL400A is the phone for you.

For analogue line (BT, Virgin, TalkTalk, etc.)
No of handsets 1
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)

Top 7 Product Questions for Siemens Gigaset SL400A with Range Extender

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Average Customer Review
more score details
Customers most agreed on the following
Good points
  • Easy to read screen (8)
  • Lightweight (6)
  • clear voice (5)
  • long lasting (4)
  • Easy to use (3)
Bad points
  • None (2)
  • size (1)
  • Redial Ability (1)
  • No chrome base available as my other phones had (1)
  • Uses two mains sockets (1)

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Product Manuals Siemens Gigaset SL400A with Range Extender

Siemens Gigaset SL400A with Range Extender
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