User’s Manual
1
1 Introduction
1.1 Overview
Wireless keypad is used with alarm hub, and supports multiple users, allowing each one to access
the alarm security system with their own private passcode. The system also conveniently keeps a log
of the operations performed by each user, making it easy to review and analyze usage history. It is
ideal for use in villas, shops, apartments and more.
1.2 Technical Specifications
This section contains technical specifications of the keypad. Please refer to the ones that correspond
with your model.
Table 1-1 Technical specifications
Type Parameter Description
Function
Indicator Light
4 indicators (communication, arming and disarming,
fault, and alarm)
Key 15 keys (0–9, *, #, arm, disarm, and home arm)
Buzzer 1 × built-in buzzer
Arm and Disarm Passcode; IC card
Remote Update Cloud update
Low Battery Detection Yes
Tamper Yes
Measuring Range
(Temperature)
–15 °C to +65 °C (+5 °F to +149 °F) (indoor)
Measuring Accuracy 1 °C (33.8 °F)
Wireless
Carrier Frequency
DHI-ARK30T-W2 (868):
868.0 MHz–868.6 MHz
DHI-ARK30T-W2:
433.1 MHz–434.6 MHz
Communication Distance
DHI-ARD821-W2 (868):
Up to 1,600 m (5,249.34 ft)
in an open space
DHI-ARD821-W2:Up to
1,200 m (3,937.01 ft) in
an open space
Power Consumption Max. 2.3 W
Communication
Mechanism
Two-way
Encryption Mode AES128
Frequency Hopping Yes
General
Operating Temperature –10 °C to +55 °C (+14 °F to +131 °F) (indoor)
Operating Humidity 10%–90% (RH)
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