Self tuning range:  20 -1500μH
Sensitivity: Four step adjustable –

High: 0.02% ΔL/L
Medium High: 0.05% ΔL/L
Medium Low: 0.1% ΔL/L
Low: 0.5% ΔL/L
Frequency: Four step adjustable, 12- 80kHz (frequency determined by loop geometry)
Output Configuration: 2 output relays:
Configuration Relay 1 = Presence output
Relay 2 = Pulse output
Pulse output duration: Approx. 150ms (factory option 250ms)
Presence time: 1 hour for 3% ΔL/L and permanent presence option
Operating modes:

1. Limited / permanent presence
2. Pulse on detect/undetect
3. Automatic Sensitivity Boost off/on
4. Filter off/on (2 second delay)

Indications: The following indications are provided:
Red LED – power
Green LED – channel indicator

1. Tuning – on steady followed by flashing frequency count (x 10 kHz)
2. Undetect – indicator off
3. Detect – on steady
4. Fault – on with short off

Reset: Push button on PCB or external
Protection: Loop isolation transformer, zener diode clamping on loop inputs and gas discharge tube protection
Power requirements: 24V DC ±15 % (option: 12V DC for Bulwark equipment)
Presence Output Relay: 1A @ 230V AC change-over contacts (fail-safe)
Pulse relay: 1A @ 230V AC change-over contacts (non-fail-safe)
Operating temperature range: -40ºC to +80ºC
Mounting:  Pillar or plug-in mounting
Connector: 10-pin 3.9mm centre side entry female PCB connector for 1.4 sq. mm pins (#2145/AA 10A)
Option: 1 metre flying lead