Temperature Alarms and Transmitters

lifetime warranty
  • Lifetime Warranty on API Modules
  • LoopTracker® LEDs
  • Hot-Swappable Plug-In Design
  • Push to Test Output
  • Full I/O/Power Isolation
Click on PDF links below
for product information

Literature and Links

API product brochure
Options & accessories
Cross reference
Regulatory Compliance page

UL Approvals

API modules USA
API modules Canada

APD modules USA
APD modules Canada

Reference Info

Thermocouple types
What is a Ground loop?
Installation FAQs
LoopTracker and Output Test
Sink or source


Monitor stack flare
Oven overtemp shutdown
Monitor chillers and freezers

How to Order

  1. Select a model
  2. See data sheet for ordering info and options
  3. Note that options affect pricing
  4. Request a quote via chat or call us
  5. 2-5 day typical lead time + shipping time
  6. 5-10 day lead time for quantities of 5 or more + shipping time
  7. To place your order
Model Input/Output Features Product

Thermocouple to DC Isolated Signal Conditioner

Factory Configured

API 4130 GL  from $399

Open Feature Summary
Download Feature Summary

Open Datasheet
Download Datasheet

API 4130 GL sold before 07-12-16

Open Datasheet
Download Datasheet
Specify T/C type and
°F or °C temperature range

Factory configured
Thermocouples J, K, T, E, R, S, N, B, C, D, G, M, P
±0.25°C Accuracy
New microprocessor-based linearization

Specify output range
Factory configured analog output
0-1 V to 0-10 V
±1 V to ±10 V
0-1 mA to 0-20 mA, 4-20 mA

  • Hot-swappable plug-in design
  • Isolated & linearized
  • Automatic cold junction compensation
  • Full I/O/power isolation
  • Repalces Action AP 4130
  • I/O LoopTracker LEDs
  • Output test button
  • Uses API-008 8-pin socket
  • 115 VAC powered
  • A230 option for 230 VAC
  • P option for 85-265 VAC, 60-300 VDC power
  • D option for 9-30 VDC power

Api 4130GLNew! UL listed
API 4310 GL
Discontinued Temperature
APD 1430 RTD Band Alarm Trip
API 4000 G RTD or T/C to DC Signal Conditioners. See APD 4000
API 4100 G Non-Isolated T/C-DC Transmitter. Replaced by the API 4130 GL
API 4130 GL sold before 07-12-16 Non-microprocessor T/C-DC Transmitter
APD 1430
RTD Input Band Alarm Trip