Self tuning range: 20-1500μH
Sensitivity: Four step adjustable on face-plate
High: 0.02% ΔL/L
Medium High: 0.05% ΔL/L
Medium Low: 0.1% ΔL/L
Low: 0.5% ΔL/L

Frequency: Two step adjustable on face plate, 12- 80kHz (frequency determined by loop geometry)
Output Configuration: 2 output relays
Configuration Relay 1 = Presence output
Relay 2 = Pulse output (undetect)

Pulse output duration: Approx. 150ms (factory option 250ms)
Presence time: 1 hour for 3% ΔL/L and permanent presence option
Operating Modes: Fail Safe / Fail Secure (selector on faceplate)
Indications: Two face-plate indications are provided:
Red LED – Power
Green LED – channel indicator
1. Tuning – on steady followed by flashing frequency count (x 10 kHz)
2. Undetect – off
3. Detect – on steady
4. Fault – on with short off
Protection: Loop isolation transformer RFI filtering, zener diode clamping on loop inputs and gas discharge tube protection
Power Requirements: 24V AC/DC ±10% (1.5VA max)
Presence Output Relays:  0.5A @ 30V AC/DC – Normally open contact (fail-safe) & Normally closed contact (fail-secure)
Pulse Output Relay: 0.5A @ 30V AC/DC – Normally closed contact
Operating temperature range: -40ºC to +80ºC
Feig VEK M1H