Specifications
Single Door Products
Codelocks
1-5© Siemens Switzerland Ltd 2011
1
Type Order No.
K42
Codelock with two codes
The K42 is the best-selling codelock in the world. It is compact and easy 
to use with a modern design that is suitable for either indoor or outdoor 
mounting. The K42 has a capacity of two four-digit codes. One can be 
used by residents while the other is used by the property caretaker‚ for 
example. All settings are made directly in the unit. 
Operating voltage 12 to 24 VAC/DC 
Current consumption 8 mA in standby 
Inputs Exit button requests with delay. 
Two separate for code disable. 
Outputs Voltage-free relay contact‚ max. 1 A‚ 
28 VDC. 
Opening time 1D30 sec. 
Code capacity Two four-digit codes 
Operating temperature -35 to +55 °C
Environment Indoor or outdoor use (IP54 
design). In very exposed locations‚ 
use SH2 or SH1 rain cover. 
IP rating IP54 
Housing Cast metal with stainless steel but-
tons and security lock 
Colour Grey 
Dimensions (W x H x D) 80 x 140 x 40 mm
Weight 0.72 kg
S24246-C3552-A1










