Siemens HTRI-R — addressable single-input interface module with an integral Form C relay, Siemens part number 500-033300.
The HTRI series lets direct shorting devices join the DLC device loop of a Siemens FireFinder-XLS or FS-250 panel, monitoring one normally open or normally closed dry contact such as a waterflow or tamper switch. The R suffix denotes the relay, not a colour or a remote: it adds an addressable single-pole double-throw relay that the panel drives as a separate function at the same address, typically to shunt external equipment.
- Monitors one N.O. or N.C. dry contact; Form C relay up to 4 amps
- Relay resistive rating 4 A at 125 VAC and 4 A at 30 VDC
- Draws 1.3 mA in standby and during polling, 30 VDC maximum
- End-of-line device: 470 Ω, 1/4 W resistor, Siemens P/N 140-820164
- Polarity insensitive two-wire connection, 12 to 18 AWG terminals
- Tricolour LED: green normal, amber trouble, red change of state
- 32 to 120°F, up to 93% RH non-condensing
Do not order it in place of the HTRI-S (500-033370), the same input without the relay, or the HTRI-D (500-033360), the dual-input module.
