Technical Specifications:

Operating Voltage: 12 VDC
Power Consumption: ≤ 2 W
Operating Temperature: -20 °C to 65 °C (-4 °F to 149 °F)
Operating Humidity: 10% to 90% (non-condensing)
Dimensions: 115 mm × 44 mm × 22 mm (4.53'' × 1.73'' × 0.87'')
Installation: Wall-mounted with screws (does not support gang box)
Weight: Total weight: 0.25 kg (0.55 lb), Net weight: 0.14 kg (0.31 lb)
Keyboard: 12 keys (0 to 9, *, #)
Buzzer: Yes
Communication Protocols:

RS-485: 1
Wiegand: 1 (set via DIP switch)
OSDP Protocol
Other Features:

Integrated EM card reading module (Frequency: 125KHz).
Supports intrusion alarm.
Built-in buzzer for reading status identification.
Online update function.
Watchdog design ensures self-repair when exceptions occur, ensuring long device lifespan.
Pros:

Reliable operation: High-quality 32-bit processor ensures fast and efficient card reading.
High security level: Supports intrusion alarm, notifying about any unauthorized entry attempts.
Wide operating temperature range: Suitable for extreme conditions, from -20 °C to 65 °C.
Comprehensive connectivity: Supports multiple communication protocols (RS-485, Wiegand, OSDP) for easy integration into existing systems.
Convenient installation: Easily mounted on walls without additional requirements for mounting boxes.
Cons:

Installation limitations: Does not support gang box, which may complicate installation in some situations.
Capability limitations: While it supports EM cards, it may not be compatible with other card types, requiring special readers.
Minimal power consumption: Although power consumption is low, 2 W may be problematic with a larger number of devices if there is no suitable power source.
Difficulties in updating: Although there is an online update feature, this may be complicated for inexperienced users.