|  |  DKM1-mini
 |  DKM2
 |  DKM4
 |  DKM7
 |  DKM9
 |  DKM10
 | 
 | Key Function | World's smallest HF OEM reader module | Most secure and feature-rich HF reader module 
 | Specialized functionality for market applications | Market's most affordable UHF reader module | Market's highest performing, most affordable UHF reader module | Market's highest performing UHF reader module | 
 | Frequency | HF 13.56MHz
 | HF 13.56MHz
 | HF 13.56MHz
 | UHF 862-955 MHz
 | UHF 862-955 MHz
 | UHF 862-955 MHz
 | 
 | Protocols | ISO 15693ISO 14443A
 | ISO 15693 ISO 14443A/B (parts 1-4)
 | ISO 15693 ISO 14443A/B (parts 1-3)
 firmware selectable
 | EPC C1G2 /ISO 18000-6C
 
 | EPC C1G1 EPC C1G2 /ISO 18000-6C
 ISO 18000-6A&B
 | EPC C1G2 /ISO 18000-6C
 
 | 
 | Size | diameter of U.S. quarter 25.4 mm | 1/2 size of a business card 66 x 36 x 5 mm
 | size of 4 small postage stamps 39 x 36 x 11.5 mm
 
 | 1/2 size of a business card 53 x 36 x 9 mm
 | 1/2 size of a business card 66 x 36 x 5 mm
 | 3/4 size of a business card 
 | 
 | Effective Range | 5.8 cm - 8.5 cm | 3 cm - 16 cm | 4.5 cm - 14 cm | 0.5 m - 1.5 m | 1 m - 3.5+ m | 1 m - 5.5+ m | 
 | Host Connectivity | TTL, I2C, SPI | TTL, I2C, SPI, USB | TTL, I2C, USB | TTL, I2C, SPI, USB | TTL, I2C, SPI, USB | TTL, I2C, SPI, USB | 
 | Connection Type | Solder holes | 24-pin, 50-pin | 24-pin | 24-pin | 24-pin, 50-pin | 24-pin | 
 | Specs | 
 | Security: Proprietary | X | X | X | X | X | X | 
 | Security: Standards-based |  | X | X | X | X | X | 
 | Security: Extensible |  | X |  |  | X | X | 
 | External Antenna | X | X | X | X | X | X | 
 | Internal Antenna |  | X | X |  |  |  | 
 | Multiple Antennas (MUX support) |  | X |  | X | X | X | 
 | Applications | 
 | Access Control and Payment |  | X | X | X | X | X | 
 
 | Item-Level Inventory |  | X |  | X | X | X | 
 | Patron Management | X | X |  | X | X | X | 
 | Product Authentication | X | X | X | X | X | X |