Doesn't having this on your keyring mean that anyone finding/stealing your keys can both get into your house and disable the alarm without the code?!

Yes. However only if they get to your house before you do, as you can disable the key fob from the central control panel.

Can i confirm if this works with the sr-340 (yale smart home alarm)? thanks.

We purchased the Yale EF-Series Standard Alarm Kit so I'm not sure if it will work on the SR-340. Yale has a technical department so they may be able to help although it states it works with SR and Ef series so should do

Can you part arm the systen with the fob or does it only fully arm the system?

I believe this fob arms the system fully. I haven't yet figured out how to configure this through the mobile app. So, the default action is to fully arm the system.

Does this work with Easy Fit Wireless telecommunications system?

As the product title suggests, it's fit for any EF and SR Alarm Series. If your telecommunications systems is any of these two series then this should work. I believe, EF is 'Easy Fit', which means this will work.

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Yale EF-KF Easy Fit Alarm Remote Keyfob, White, Accessory for SR & EF Alarms

Product ID: 47904768

Details

Brand
Yale
Special feature
Wireless
Colour
White
Max number of supported devices
1
Compatible devices
Yale SR Smart
Connectivity technology
Wireless

📶868MHz wireless frequency

🔋1x CR2 battery included

🔗Seamless Yale SR & EF alarm pairing

Description

🔐 Your Yale alarm’s best sidekick—security at your fingertips, anytime.

RELIABLE BACKING - Comes with a 2-year UK consumer support guarantee—security you can count on.
PLUG PLAY SETUP - DIY-friendly wireless pairing means no tech headaches, just quick and easy installation.
UNIVERSAL COMPATIBILITY - Works flawlessly with Yale SR Smart Home and EF Series alarms—future-proof your security.
INSTANT SECURITY CONTROL - Arm or disarm your Yale alarm with a single button press—effortless peace of mind.
SHARED ACCESS ZERO RISK - Grant trusted visitors control without sharing alarm codes—perfect for dog walkers or cleaners.

The Yale EF-KF Easy Fit Alarm Remote Keyfob is a compact, wireless accessory designed to arm, disarm, or trigger your Yale SR Smart Home and EF Series alarm systems remotely. Operating at 868MHz and powered by a CR2 battery (included), it offers quick DIY pairing and secure shared access for trusted visitors. Backed by a 2-year UK guarantee, it’s the perfect add-on for millennial professionals seeking seamless, flexible home security control.

Specifications

ASIN	B00B9EV6U4
Batteries	1 CR2 batteries required. (included)
Best Sellers Rank	246,500 in DIY & Tools ( See Top 100 in DIY & Tools ) 395 in Home Alarm Systems
Brand	Yale
Colour	White
Customer Reviews	4.4 4.4 out of 5 stars (1,078)
Date First Available	1 Feb. 2013
Guaranteed software updates until	unknown
Included components	1 x Yale Security Easy Fit Remote Keyfob
Item Weight	18 g
Item model number	YEFKF
Model year	2016
Package Dimensions L x W x H	14.2 x 4 x 1.7 centimetres
Package Weight	0.03 Kilograms
Part number	YEFKF
Product Dimensions L x W x H	24 x 48 x 80 millimetres
Style	Single
Warranty description	12 months.

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