Fire AlarmEngineers Hub

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CALCCalculators & Electrical›

🔋Battery Capacity🔒 ↻Loop Capacity🔒 ↯Voltage Drop🔒 ⎓PSU Load🔒 ΩOhm's Law🔒 ▧Resistor Tools🔒

ADDRAddressing & Protocols›

XPApollo XPERT Card🔒 DILApollo DIL / DIP🔒 APApollo Addressing Overview🔒 01Generic Binary🔒 PRProtocol Reference🔒

TESTTesting & Maintenance›

1MOne-Man Testing🔒 ⚠Fault Finder🔒 ✓Commissioning🔒 🛠Service Checklist🔒

LOGICDisablements & Logic›

OFFDisable / Enable🔒 DGDisablement Groups🔒 C&ECause & Effect / Logic🔒

MFGPanel Manufacturers›

KBManufacturer Index🔒 ADAdvanced🔒 KEKentec🔒 CTC-TEC🔒 GEGent🔒 NONotifier🔒 MOMorley-IAS🔒 PRProtec🔒 FIFike🔒 EAEaton🔒 GFGFE🔒 NINittan🔒 SISiemens🔒 RFWireless / Hybrid🔒

REFReference›

§Standards & Sources🔒

SiteTools engineering aid

Verify every value, menu path and temporary disablement against the installed panel, current site documentation and manufacturer instructions.

Ohm's Law

ELECTRICAL

Ohm's Law Calculator

Enter any two values to calculate the others.

Voltage (V) Current (A) Resistance (Ω) Power (W)

For predictable results, enter exactly two values.

SiteTools · Fire Alarm Engineers Hub · Standalone HTML engineering aid