|   |
SZB7 ZoneMaster Single Zone Booster |
DZB7 ZoneMaster Dual Zone Booster |
| Number of Independent Zones     |
1 |
2 |
| Auto Reverse     |
NO |
YES |
| User Adjustable Trip Current     |
YES |
YES |
| Number of Auto-reverse Zones     |
0 |
1 |
| Maximum Continuous Current     |
7 amps |
| Maximum Allowable Surge Current     |
30 amps |
| Each Zone with Circuit Breaker     |
YES |
| DCC Signal Indicator     |
YES |
| Independent Thermal Protection     |
YES |
| Reverse Polarity Protection     |
YES |
| Opto Isolation     |
YES |