Features: • Surface mount design • Monitor up to 2 flame scanners • Selectable FFRT • Dual sensitivity (gain) settings • 0-3 VDC flame signal strength test jacks • Marginal alarm (optional) • Local LED flame strength indicator (optional) • 0-20 mA flame signal strength analog output (optional) • Supply voltage: 120 VAC/230 VAC • High sensitivity/discrimination amplifiers