UNDERWRITERS LABORATORIES® COMPLIANCE VERIFICATION SHEET
CK721-A SERIES INSTALLATION MANUAL
This product is listed under Underwriters Laboratories UL™ 1076 for Proprietary Burglar Alarm Units and Systems
and UL 294 for Access Control Systems Units. When installed at the site the following requirements must be met to
comply with these standards.
1. Transient protection devices that are installed must not be removed or defeated.
2. The CK721-A shall be mounted in subassembly S300-DIN-L or S300-DIN-S.
3. The CK721-A in combination with the S300-DIN-L or S300-DIN-S must be connected to a UL Listed
Uninterruptible Power Supply that provides a minimum of 24 hours of AC emergency power.
4. The tamper switch must be enabled at all times.
5. Systems requiring the use of network hubs, routers, bridges, network switches or the like shall guarantee
these devices are UL Listed for fire and shock in the category control number (CCN) NWGQ and/or EMRT.
These devices shall be installed in a temperature-controlled environment. The temperature-controlled envi
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ronment must be maintained between 13 - 35°C (55 - 95°F) and relative humidity of 85 ± 5% by the HVAC
system. Twenty-four hour standby power shall be provided for the HVAC system.
6. The installer shall incorporate a supply line transient suppression device complying with the Standard for
Transient Voltage Surge Suppressors, UL 1449, with a maximum rating of 330 V. Supply line transient sup
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pression device is to be used with the power supply to the network hub(s) routers, bridges and/or network
switches.
7. External network hubs, routers, bridges or network switches must use signal line transient suppression
devices complying with the Standard for Protectors for Data Communications and Fire Alarm Circuits, UL
497B, with a maximum marked rating of 50V.
8. In the CK721-A user-interface, the “Network Polling [LAN]” parameter must not exceed 90 seconds.
9. Modems shall not be used for primary connection to the host computer. Modems have only been investi-
gated by UL for supplementary use.
10. The use of the MTI-STI-MUX-KIT and MTI-STI-MUX has not been investigated by Underwriters Labora-
tories.
11. The Otis elevator interface has not been investigated by Underwriters Laboratories.
12. Do not connect equipment to an AC power source that is controlled by a switch.
13. The Kone IP elevator interface has not been investigated by Underwriters Laboratories.
14. Do not connect equipment to an AC power source that is controlled by a switch.
15. For CK721-A, provided as part of an SPA, SPB, and SPC security control panel assembly, items 1 and 4
through 13 apply.
16. The CK721-A, provided as part of an SPA, SPB, and SPC security control panel assembly, must be con-
nected to a UL Listed Uninterruptible Power Supply that provides a minimum of 24 hours of AC emergency
power.
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