Specifications
Model Number

HQ-J-DK420-WH, Dynamic keypad-white 434Mhz

HQ-J-DK420-BL,  Dynamic keypad-black 434Mhz

Power 24 V- 113 mA
Typical Power Consumption1.5 W; 6 Power Draw Units* (PDUs).
Test conditions: LCD backlight on at 80%, buttons backlight on at 28%, while in use.
* For more information about PDUs, please see the HomeWorks® QS Wiring and Power Guidelines document on the HomeWorks® QS Resource Website.
Regulatory Approvals UL, cUL, FCC, IC, SCT, CE, C-tickS
Environment Ambient operating temperature: 32 °F to 104 °F (0 °C to 40 °C), 0%-90% humidity, non-condensing. Indoor use only.
Communications Dynamic Keypads communicate with the system through the Wired QS Link or through Radio Frequency (RF). When using RF (HQ-J models only), the 
Dynamic Keypad must be located within 30 ft (9 m) of a repeater. System devices operate on frequencies between 431.0 MHz and 437.0 MHz. To improve system commissioning time, Lutron recommends no more than ten Dynamic Keypads per RF Link. QS Link wired installations offer faster commissioning time.
ESD Protection Tested to withstand electrostatic discharge without damage or memory loss, in accordance with IEC 61000-4-2.
Surge Protection Tested to withstand surge voltages without damage or loss of operation, in accordance with IEEE C62.41-1991 Recommended Practice on Surge Voltages in 
Low-Voltage AC Power Circuits.
Power Failure Power failure memory: should power be interrupted, the Dynamic Keypad will return to its previous state when power is restored.
Mounting The Dynamic Keypad must be installed in a flat, hollow wall (e.g., not concrete wall). If gap between wall and mounting frame is larger than the thickness of a credit card, wall must be repaired to eliminate gap. Otherwise, damage to the 
Keypad may result. Custom mounting frame included. Minimum wall depth: 2 ¼ in (57 mm). Wall thickness range: 1/4 in (6 mm) to 1 in (25 mm).
Wiring RF: Two 18 AWG (1.0 mm2) IEC PELV / NEC® Class 2 cable. Wired: Two 22 AWG (0.5 mm2) twisted shielded and two 18 AWG (1.0 mm2) IEC PELV / NEC® Class 2 cable. Use Lutron® cable GRX-CBL-346S