DATA SHEET V1.3 Magnet Contact Transmitter Module STM 32x / STM 320C STM 320U The radio transmitter module family STM 32x from EnOcean enables the implementation of a wireless magnet contact sensor. Powered by a small pre-installed solar cell, it works absolutely maintenance-free. An integrated energy store allows operation for several days even in total darkness. Key applications are window and door sensors. Functional Principle The STM 32x supervises an integrated reed contact and reports every status change immediately (open<>closed). In addition a sign of life signal is transmitted every 20-30 minutes. STM 32x implements three frequency variants – STM 320 /STM 329 using 868MHz, STM 320C using 315MHz and STM 330U using 902MHz. Features Overview Power supply Ordering Code S3001-D320 S3001-D329 S3031-D320 S3051-D320 Additionally the STM 320 and STM 329 in 868 MHz include the enhanced secure mode. In enhanced secure mode the communication is protected by enhanced security features e.g. encryption. provided by a small pre-installed solar cell Antenna Frequency Type STM320 STM329 STM320C STM320U pre-installed helical antenna 868.3 MHz (STM 32x) / 315.0 MHz (STM 320C) / 902.875 MHz (STM 320U) Radiated output power Data rate / Modulation type STM 320: typ. 5 dBm (EIRP) STM 329: typ. 5 dBm (EIRP) STM 320C: +92 dBµV/m ± 2 dB2 STM 320U: +99 dBµV/m ± 2 dB2 125 kbps / ASK(868MHz, 315MHz) or FSK(902MHz) EnOcean Equipment Profile D5-00-01 Start-up time with empty energy storage typ. <2.5 min @ 400 lux, 25°C Initial operation time in darkness @25°C1 typ. 6 days, if energy storage fully charged Reed contact 1x internal, Meder MK23-90-BV14496 or MK01-I Teach-in button 1x internal Transmission indicator Module dimensions Operating temperature1 Encryption Algorithms 1x LED 43 x 16 x 6 mm -20 up to +60 °C VAES 128, CMAC – STM 320 / STM 329 1 Tolerance of measurement in production at 50 Ω 2 Full performance is achieved after several days of operation (up to two weeks) at good illumination level. Performance degrades over life time, especially if energy storage is exposed to higher temperatures. Each 10 K drop in temperature doubles the expected life span. © EnOcean | www.enocean.com Subject to modifications | v1.3 | February 2015