PANTRONISM-1510 / ISM-1515 / ISM-1516

ISM-151x

1-channel amplifier series with adjustable sensitivity and relay or semiconductor relay output. The ISM-151x family covers three 1-channel DIN-rail amplifiers for harsh industrial light-barrier applications. All three models use manual sensitivity adjustment, operate from 24 V AC or DC, and provide long through-beam range with pluggable terminals. The ISM-1510 uses a floating relay output, while the ISM-1515 and ISM-1516 use a floating semiconductor relay output.

Datasheet PDF Operating Guide PDF

Up to 70 m range24 VAC / VDC4.0 kHzDIN railPluggable terminalsIP20 housing

Key Features

Detection range up to 70 m, depending on transmitter / receiver pair.
Sensitivity adjustable with front potentiometer.
Operating voltage 24 V AC or 24 V DC.
Floating distance switching output; relay on ISM-1510 and semiconductor relay on ISM-1515 / ISM-1516.
Pluggable screw-terminal connections for service-friendly wiring.
DIN-rail mounting to EN 60715.

Best Fit Applications

Long-range through-beam sensing in dusty, wet, or contamination-heavy environments.
Machine guarding, gate monitoring, and access control where stable optical detection is needed.
Bulk-material, timber, paper, washdown, and industrial conveying applications.
Retrofits where DIN-rail packaging and pluggable terminal blocks simplify panel work.

This page consolidates the grouped models shown together so the shared electrical and optical platform can be reviewed in one place.

Technical Specifications

Models	ISM-1510 / ISM-1515 / ISM-1516
Operating voltage	24 V AC ±10% / 2.4 VA or 24 V DC ±10% / 2.4 W
Operating basis	Modulated infrared light
Transmit frequency	4.0 kHz
Transmit power	Manual
Basic transmit level	High
Switching behaviour	Light
Switching delay	—

ISM-1510 output	Relay, normally open
ISM-1510 rating	5 A / 230 V AC (24 V DC)
ISM-1515 / ISM-1516 output	Semiconductor relay, normally open
ISM-1515 / ISM-1516 rating	100 mA / 60 V AC (DC)
Reaction time	36 ms
Housing	Polyamide, light grey
Protection class	IP20 (EN 60529)
Connection / wire size	Plug with screw terminals / 0.2 ... 2.5 mm²
Operating temperature	-25 °C ... 50 °C
Dimensions	ISM-1510 / 1515: 22.5 x 94 x 84 mm; ISM-1516: 22.5 x 94 x 63 mm

Compatible Sensor Pairs and Maximum Through-Beam Range

Transmitter family	With receiver IRL-...	With receiver IR-...	Typical use note
IT-..., ITL-...	20 m	25 m	Compact standard pairings
IT-...HP, ITH-...	30 m	35 m	Higher-power range extension
ITA-...	50 m	70 m	Longest stated range in this family

Maximum range values are listed for through-beam operation.

Ordering and Accessories

Switching output	Order code
Relay	ISM-1510/24V
Semiconductor relay	ISM-1515/24V
Semiconductor relay	ISM-1516/24V

Accessory	Order code
Protective enclosure	PanBox 1x1
Power supply PSU-1000	PSU-1000S/95...265VAC

Configuration and Wiring Notes

Factory amplifier mode on the catalog page is marked in white.
ISM-1516 uses the shorter housing depth shown in Pantron picture 2 on page 55 of the catalog.
This series does not list test input, analog output, alarm output, or COM interface functions.

For full connection diagrams, mechanical drawings, and companion transmitter / receiver options, refer to the Pantron catalog PDF linked above.