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Will this fit all Master Lock boxes?How do I install the key tether?Is it durable for long-term use?How does the retractable cable work?What tools do I need for installation?

Master Lock Black Key control

Name: Master Lock Black Key control
Brand: Master Lock
SKU: 5001894733
Rating: 5 (2 reviews)

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The Master Lock retractable key tether is an accessory intended for use with the Master Lock mechanical and Bluetooth enabled lock box families. The key tether secures the key to the lock box, precluding the guest from taking the key with them after accessing the property.

Fits inside the following Master Lock lock boxes: 5400, 5401, 5414, 5415, 5420,5424, 5425, 5440, and 5441
Retractable cable extends up to 36 in (91cm)
Key tether is attached to the inside of the lock box with very high bond (VHB) tape
Keys are attached to the end of the retractable cable via loop end with adjustable collar or with a key ring
Tether will then retract any slack in the cable when the user puts the keys back into the lock box
Fits in any Master Lock lock box style

General
Material	Steel	Type	Key control
Package Contents	Key Tether Cable	Color/Finish Family	Black
Package Quantity	1	Manufacturer Color/Finish	Black

Certifications
CA Residents: Prop 65 Warning(s)	No

Warranty
Warranty	Limited lifetime

Miscellaneous
UNSPSC	46171500

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Review

5 out of 5

2 Reviews

4 Star

3 Star

2 Star

1 Star

100% Recommend this product

Ratings may include incentivized customer reviews.

2 Customer Reviews

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Very handy

Would Recommend

No more dropped or lost keys or fumbling to close the lock box. This just makes sense.

Arpie9May 7, 2026

From Masterlock.com

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		Name	Current Item Master LockBlack Key control
		Ratings	2
		Material	Steel
		Package Quantity	1
		Manufacturer Color/Finish	Black
SABREPepper Spray with Finger Grip Black Keychain	Lucky Line Super Bak 48-Inch Kevlar Retractable Key Reel Black	WORKPROWall Mount Black Keyed-entry 48-Key Cabinet	Nite IzeBlack Key hider	Lucky Line Secure-It 48-inch Retracting Key Reel with C-Clip	SABREBlack Keychain	Nite IzeBlack Key hider	Nite IzeBlack Lanyard	Hillman20 -Pack Black Key cabinet
101		1	23		100	33	36	8
Plastic	Plastic	Steel	Plastic	Steel	Plastic	Plastic	Stainless steel	Steel
1	1	1	1	1	1	1	1	20
Black	Black	Black	Black	Textured chrome with black C-clip	Black	Black	Black	Black