Deister Electronic GmbH PRD5SWH4100 用户手册

Table 4 indicates maximum wiring distances per Wiegand standard with 
the three most common gauges of cable.

Unless otherwise specified in this manual, please follow these guidelines:

1. Shielded cable is recommended in electrically noisy environments.

2. You can use a local power supply for the reader. If so, don’t connect the 

power supply from the controller to the reader. The ground line of the 
local power supply must be connected to the power supply of the 
controller.

3. The unit needs to be operated with a power source with limited power 

consumption according to EN 60950-1 (2003) paragraph 2.5.

4. Use of a pull-up resistor may be required by some controllers. Consult 

your controller manual.

5. For tamper wiring, connect Pins 11 and 12 to a normally closed 

supervised input, as shown in Figure 3.

FIGURE 3. Normally Closed Wiring for Reader Tamper

TABLE 4. Maximum cable distance for 18, 20, or 22 AWG wire

18 AWG

20AWG

22 AWG

500 feet 
(152 meters)

300 feet
(91 meters)

200 feet
(61 meters)